What Actually Works for Feral Hog Control (And What Fails Repeatedly)
Feral hog control works best when managers remove whole social groups, keep pressure on surviving animals, and match the method to local conditions instead of relying on occasional shooting.
Photo: Chris Mitchell / Land & Wildlife Report
In This Report
The strongest evidence does not support casual, one-animal-at-a-time feral hog control as a reliable population strategy. Wild pigs (Sus scrofa) reproduce quickly, live in family groups called sounders, move across property boundaries, and can change their behavior when repeatedly disturbed.
Whole-sounder trapping is one of the best-supported ground methods because it is designed to remove the entire family group instead of a few animals. But trapping is not a one-and-done solution. Research shows populations can recover quickly when survivors remain or pigs move back into an area. Sustained monitoring and follow-up matter just as much as the initial removal.167
There is also an important regional qualification. Indiana, Illinois and Kentucky do not manage wild pigs exactly the same way. In places where populations remain scarce, agencies may be trying to eliminate them entirely rather than simply reduce damage. Local rules should come before any control attempt.
Why Most Feral Hog Control Fails
Most unsuccessful control efforts have the same basic problem: a few hogs are removed, but the population remains.
That can happen after occasional hunting, a trap catches only part of a sounder, or removal stops as soon as activity becomes less obvious. The immediate result may look encouraging. There are fewer tracks. Cameras go quiet. Crop damage slows down.
That does not necessarily mean the problem is over.
Feral hogs live in social groups made up largely of adult females and their young. USDA reports that sounders can range from only a few animals to groups approaching 30. Females can breed year-round and may produce up to two litters of 4 to 12 piglets under favorable conditions.3
More important, recent field research has documented just how quickly reduced populations can recover. A 2024 USDA Forest Service study followed two South Carolina wild-pig populations after trapping reduced density by 54% to 68%. The populations returned to their pre-trapping densities in about 3 and 5 months. Researchers attributed the recovery to surviving pigs, reproduction and immigration from surrounding areas.7
That finding changes the way partial removal should be understood. Removing some animals does not automatically increase reproduction, and every partial removal does not make the population larger. The problem is simpler: unless the remaining population and reinvasion are dealt with, the reduction can disappear surprisingly fast.
The Tri-State Is Not Texas
Much of the country’s feral-hog research comes from places with large, established populations. That research explains the biology and control methods well, but the management goal can be different in the Land & Wildlife Report region.
As of September 2026, Indiana reports no established wild-hog population. Kentucky says its remaining populations are at their lowest level in a decade and continues to pursue eradication. Illinois has dealt with established breeding populations and operates a cooperative removal program with USDA Wildlife Services.456
Indiana
Indiana DNR says there is currently no established population. Landowners or people with written permission may remove wild hogs on private property under state rules, but DNR and USDA Wildlife Services ask the public to report sightings so agencies can investigate and respond quickly.
Illinois
Illinois DNR works with USDA Wildlife Services and landowners on direct removal. The agency identifies corral trapping as its primary tool for removing family groups. State rules limit when hunters may shoot feral swine, and landowners generally need a nuisance wildlife permit outside specified firearm deer seasons.
Kentucky
Kentucky prohibits general wild-pig hunting and trapping because the state is trying to eradicate remaining populations. Landowners may remove pigs causing damage on their own property, but Kentucky Fish and Wildlife asks people to report pigs instead of pursuing them and offers professional trapping with USDA Wildlife Services.
What the Main Control Methods Actually Do
There is no honest universal ranking that works on every property. Terrain, hog density, local law, funding, access and the management objective all matter. USDA describes successful programs as integrated efforts that may combine trapping, ground removal, aerial removal, fencing and other tools.12
Still, the evidence gives us a useful hierarchy. Methods that remove whole groups and continue pressure across time have much stronger support for population reduction than occasional removal of individual hogs.
Whole-Sounder Trapping
Large corral, drop or suspended trapping systems can be monitored until the whole family group is using the site. Human-controlled or remote triggers allow the operator to wait until the desired animals are inside before closing the trap.
This directly addresses one of the biggest weaknesses of traditional trapping: catching a few pigs while leaving the rest of the sounder behind.
Coordinated Removal Over Time
A successful first removal does not prevent another sounder from moving into the same ground. Continued cameras, damage checks and follow-up removal are necessary where nearby populations can recolonize the property.
Aerial Removal
Aerial operations can remove large numbers quickly in open country where they are legal and practical. Dense forest, fragmented ownership, cost, weather and local law can sharply limit their use. They are not a default recommendation for a small Tri-State property.
Night or Thermal Shooting
Thermal equipment can help locate or remove particular animals, including survivors after trapping. Shooting generally removes individuals rather than complete sounders, so it works better as part of a larger removal plan than as the entire plan.
Fencing
Fencing can protect a feeder, crop, garden, livestock area or other high-value site. That can be worthwhile. It should not be confused with population control because the hogs remain on the surrounding ground.
Why Whole-Sounder Trapping Performs Better
The technology matters less than the basic idea. Managers first determine how many pigs are regularly using a bait site. They allow the sounder to become comfortable entering the capture area. The trap is triggered only after the target group is inside.
Find the Group
Use tracks, rooting, trail cameras and reports to determine whether one animal or an entire sounder is using the property.
Let the Sounder Commit
Pre-baiting and monitoring allow managers to see whether the whole group is entering rather than triggering on the first few animals.
Remove the Group
Remote or operator-controlled systems can close only after the target animals are inside, reducing the chance of leaving trap-wary members behind.
Keep Watching
Continue monitoring after removal. Survivors, solitary boars or another sounder can return to productive habitat.
What the Research Shows
The original version of this article argued that whole-sounder removal works better than casual trapping or hunting. That conclusion still holds up.
A 2023 study led by USDA Forest Service researchers compared whole-sounder removal with more traditional control that relied primarily on conventional trapping along with dog hunting and opportunistic shooting. After the first year, average wild-pig density on whole-sounder treatment areas declined 53%. The decline on traditional-control areas was smaller and was not statistically different from the pre-treatment estimate.8
Average density decline after 1 year on whole-sounder treatment units in the 2023 USDA Forest Service study.
Estimated population removed with a remotely operated suspended trap in a southern Oklahoma field study.
Time for two studied populations to return to pre-trapping density after control stopped in a 2024 study.
Another field study in southern Oklahoma compared conventional corral traps with drop nets and a remotely operated suspended trap. The suspended system removed an estimated 88.1% of the study population and the drop-net system removed 85.7%, compared with 48.5% for the conventional corral design used in that study.9
That does not mean every suspended trap will remove 88% of the hogs or that modern corral traps are inherently ineffective. The study compared particular systems under particular conditions. Modern corral traps can also use cameras and remote triggering to wait for the complete group.
The broader lesson is more useful than declaring one commercial trap the winner: managers gain an advantage when they can observe the whole sounder and decide when to trigger the trap.
The Hard Part Comes After the First Removal
The 2024 population-recovery study is a useful warning against declaring victory too early. Even after density reductions of more than half, the two monitored populations began recovering as soon as trapping stopped and returned to their previous densities within months.7
That is why coordinated removal matters. A sounder may use several properties. Removing hogs on one farm while neighboring ground remains untreated can leave a source for reinvasion.
What Landowners Should Expect
Feral hog control rarely follows a clean schedule. A property can go from obvious nightly activity to almost nothing after removal, then show fresh sign again weeks or months later.
Monitoring helps separate temporary quiet from actual control. Trail cameras, fresh rooting, tracks, wallows and repeated observations are more useful together than any one sign by itself.
Expect Behavior to Change Under Pressure
Hogs exposed to repeated human disturbance may become more nocturnal or shift where they spend time. Kentucky Fish and Wildlife specifically warns that shooting into a sounder can scatter pigs and make the remaining animals more difficult to locate for eradication work.6
That does not mean every hog that disappears from a camera has permanently left the area. Activity can move to another field, another property or another part of the same property.
Property Lines Complicate Control
Wild pigs do not stay inside ownership boundaries. A landowner can do everything correctly and still see new animals arrive from adjoining ground.
Coordination can be as simple as comparing camera observations and fresh damage or as involved as an agency-led multi-property removal effort. The point is to treat the animals at the scale they actually use the ground rather than pretending a fence line is a biological boundary.
Check the Law Before You Act
This is especially important in the LWR region. Kentucky, Indiana and Illinois currently have different rules governing hunting, trapping, permits and landowner removal. USDA recommends checking federal, state and local law before beginning a feral-swine control program.2
What Success Actually Looks Like
Success depends on the management objective.
In a heavily infested area connected to large surrounding populations, complete eradication may be unrealistic for one landowner. Success may mean sustained population suppression and a measurable decline in crop damage, rooting or livestock risk.
In a state or county with only a small, localized population, the objective can be different. Kentucky is actively pursuing eradication and reports that several wild-pig populations have already been eliminated. Indiana currently reports no established breeding population.46
USDA APHIS reports that 12 states have eradicated feral swine since 2014.1 So “no hogs” is not an unrealistic goal everywhere.
For an individual property, evidence of improvement can include:
- less fresh rooting, wallowing and crop damage;
- fewer or no repeated trail-camera detections;
- no new sounders appearing after the initial removal;
- continued surveillance without new sign; and
- agency confirmation or broader monitoring when eradication is the objective.
The important distinction is between less activity and a completed control objective. They are not always the same thing.
Why This Matters Beyond Property Damage
Feral hogs can damage crops, pasture, wetlands, streams and wildlife habitat through rooting, trampling and wallowing. They also carry disease concerns that matter to hunters, livestock owners and people handling carcasses.
Swine brucellosis remains present in wild swine in the United States even though it has been eliminated from the commercial swine herd. The disease can infect people. CDC identifies hunters as one group at increased risk when they handle infected animal tissues, fluids or undercooked meat.10
Pseudorabies also remains present in feral swine. It does not infect humans, but it can infect domestic pigs and a range of other mammals, including dogs. APHIS recommends treating feral swine as a potential disease risk and keeping domestic swine separated from them.11
What the Evidence Supports
- Whole-sounder trapping remains one of the strongest ground-based tools because it targets the family group rather than a few individuals.
- Partial removal can produce a temporary decline without producing lasting population control; survivors, reproduction and immigration can rebuild numbers quickly.
- Hunting or individual shooting can have a supplemental role, but it should not be confused with a complete population-management strategy.
- Follow-up monitoring is part of control, not something that happens after control is finished.
- The correct objective may be suppression in one place and eradication in another. Indiana, Illinois and Kentucky currently manage wild pigs differently.
Common Questions
What is the most effective method for controlling feral hogs?
For ground-based population reduction, whole-sounder trapping has some of the strongest evidence because it can remove an entire family group at once. The best overall programs usually combine trapping with surveillance, follow-up removal and other methods suited to the property and local regulations.
Does hunting reduce feral hog populations?
Hunting can remove individual hogs and may temporarily reduce activity or damage. It is much less reliable as a stand-alone population-control or eradication strategy because complete sounders are rarely removed and surviving animals may change their behavior. Regulations also vary sharply by state.
Why is whole-sounder trapping better than catching a few hogs at a time?
Feral hogs live in social groups dominated by related females and young. Removing the entire group reduces the number of breeding animals and leaves fewer experienced survivors. Modern camera-monitored traps also allow managers to wait until the target group is inside before triggering the system.
Can feral hogs actually be eradicated?
Yes, under the right conditions. Eradication becomes more difficult as populations grow, spread across connected habitat and receive repeated immigration from surrounding areas. But USDA reports that multiple states have eliminated feral swine, and Kentucky has eradicated several local populations. Early detection and coordinated response make eradication much more realistic.
What should I do if I see a wild hog in Indiana, Illinois or Kentucky?
Report it to the appropriate state wildlife agency or USDA Wildlife Services before assuming the rules are the same everywhere. Indiana asks residents to report wild hog observations because there is no established population. Kentucky specifically asks the public to report wild pigs rather than hunt them. Illinois also provides reporting and removal assistance and has state-specific rules governing when pigs may be taken.
References
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service. Feral Swine: Managing an Invasive Species. Updated August 31, 2026. View source.
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service. Managing the Damage. Feral Swine Management Methods. View source.
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service. Identifying Feral Swine. View source.
- Indiana Department of Natural Resources, Division of Fish & Wildlife. Feral / Wild Hog. View source.
- Illinois Department of Natural Resources. Feral Swine: A Threat to Illinois. View source.
- Kentucky Department of Fish & Wildlife Resources. Wild Pig Management. View source.
- Garabedian, J. E., & Kilgo, J. C. (2024). Rapid recovery of invasive wild pig (Sus scrofa) populations following density reduction. Biological Invasions. USDA Forest Service record.
- Kilgo, J. C., Vukovich, M., Cox, K. J., Larsen, M., Mims, T. T., & Garabedian, J. E. (2023). Assessing whole-sounder removal versus traditional control for reducing invasive wild pig (Sus scrofa) populations. Pest Management Science, 79(9), 3033–3042. USDA Forest Service record.
- Gaskamp, J. A., Gee, K. L., Campbell, T. A., Silvy, N. J., & Webb, S. L. (2021). Effectiveness and efficiency of corral traps, drop nets and suspended traps for capturing wild pigs (Sus scrofa). Animals, 11(6), 1565. View study.
- Centers for Disease Control and Prevention. Brucellosis and Animals. Updated June 2, 2026. View source.
- U.S. Department of Agriculture, Animal and Plant Health Inspection Service. Disease Alert: Pseudorabies. View source.
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