What Is Critter Control and How Does It Work?

When you discover unwanted animals in your home, attic, walls, or yard, "critter control" is the umbrella term for the methods and services used to manage, remove, or exclude them. Unlike pest control—which typically targets insects and rodents through chemical treatments—critter control focuses on larger wildlife like raccoons, squirrels, opossums, bats, snakes, and birds. Understanding how critter control works, what options exist, and what factors affect outcomes will help you make an informed decision about whether professional services, DIY approaches, or a combination makes sense for your situation.

What Critter Control Actually Means

Critter control refers to the process of identifying wildlife problems, removing animals humanely (or legally), sealing entry points, and making an environment less attractive to future intrusions. The term encompasses everything from one-time removal to ongoing monitoring and preventive measures.

The core goal is twofold: eliminate the immediate problem (the animals currently in your space) and prevent recurrence (make it harder for wildlife to return). Most professional critter control services address both, though some focus narrowly on removal alone.

This is different from wildlife management at a landscape or ecosystem level. Critter control is about your specific property and your specific situation.

The Main Approaches: DIY, Professional, or Hybrid

Do-It-Yourself Critter Control

Many people attempt to handle wildlife problems themselves using exclusion and deterrent methods available at hardware stores, online retailers, and general pest-control suppliers.

Common DIY tactics include:

  • Sealing holes, cracks, and gaps with caulk, steel mesh, or heavy materials
  • Installing chimney caps, vent covers, and one-way doors
  • Removing food sources (pet food, garbage, fallen fruit, bird feeders)
  • Using motion-activated lights or sprinklers
  • Applying ammonia-soaked rags or predator urine around entry points
  • Installing heavy screening or fencing

DIY works best for prevention and minor exclusion—especially if you catch a problem early. The trade-off: it requires accurate diagnosis (knowing what animal you're dealing with and where it's entering), physical effort, and sometimes trial-and-error. You also won't have liability coverage if something goes wrong, and you won't have a guarantee if animals return.

Professional Critter Control Services

Licensed wildlife removal companies inspect your property, identify animal entry points and activity patterns, humanely trap and remove animals, and seal entry points. Many also offer follow-up inspections and warranties.

The professional advantage:

  • Trained identification of species and behavior
  • Legal and humane removal (laws vary by location and animal type)
  • Liability insurance
  • Access to specialized equipment (exclusion devices, traps, one-way doors)
  • Often a warranty: if the same animal returns within a set period, they re-treat at no charge
  • Documentation for insurance claims

The trade-off:

  • Higher upfront cost
  • You're relying on the company's competence and ethics
  • Scheduling delays if the problem is urgent

Professional critter control is most practical for severe infestations, dangerous animals, or when DIY attempts have failed.

Hybrid Approach

Many people use a combination: they hire professionals for trapping and initial exclusion, then handle ongoing prevention (keeping garbage secured, trimming branches, removing food sources) themselves. This balances cost with expert intervention.

Key Factors That Shape Your Options

Several variables determine what critter control approach makes sense for you:

Type of Animal

Different animals require different removal methods, legal approaches, and exclusion strategies.

  • Raccoons and squirrels often need trapping; exclusion with one-way doors works well
  • Bats typically require one-way exclusion (live-and-let-leave); killing them is illegal in many states
  • Snakes may only need exclusion; they often leave on their own if food sources are removed
  • Birds (especially protected species) have strict legal protections; netting or harassment may be the only legal option

Laws governing removal, relocation, and killing vary significantly by state, county, and even municipality—and by animal species. Some require that trapped animals be released on-site within 24 hours; others prohibit relocation; some allow lethal removal only under specific circumstances. Ignoring these regulations can result in fines or legal liability.

Severity and Urgency

A single bat in your bedroom is different from an active raccoon den in your attic. Severity determines whether you need immediate professional help, whether DIY exclusion will suffice, or whether monitoring is enough. Urgency (your timeline and tolerance for living with the problem) shapes whether you hire professional services or attempt a gradual DIY fix.

Property Features

Older homes with poor sealing, open crawl spaces, or complex roof structures attract wildlife and are harder to seal. Newer, well-maintained properties may only need targeted exclusion. Rural properties near wooded areas face ongoing wildlife pressure; urban or suburban properties may have fewer repeat intrusions after initial exclusion.

Underlying Conditions

Critter problems usually exist because something attracts animals: accessible food (garbage, pet food, fruit trees), water sources, or shelter. If those conditions remain, removal alone won't solve the problem long-term. Addressing underlying attractants is essential—whether you hire professionals or work alone.

Budget and Risk Tolerance

Professional services cost more upfront but transfer liability and offer guarantees. DIY costs less but requires your time and carries risk if mistakes are made (incomplete exclusion, improper animal handling, or compliance with animal welfare laws).

What to Expect From Professional Critter Control

If you decide professional help is the right fit, understanding the typical process helps you evaluate a company's approach:

  1. Inspection & Assessment — A technician walks your property, identifies entry points, assesses damage, determines animal species, and estimates the scope of work
  2. Removal Plan — The company explains what they'll do: trapping location, exclusion method, timeline, and any warranty
  3. Removal & Exclusion — Animals are trapped and removed (or excluded via one-way doors); entry points are sealed with materials the animal cannot chew through
  4. Cleanup — Contaminated insulation, droppings, and debris are typically removed (sometimes at additional cost)
  5. Follow-up — Many companies offer inspection callbacks to ensure exclusion is holding and no new entry points have opened

Cost ranges vary widely based on animal type, property size, severity, and location. Expect to research and get multiple quotes; pricing transparency is a sign of a reputable company.

Prevention: The Real Long-Term Solution

Once animals are removed, prevention is where critter control truly succeeds or fails.

  • Seal gaps and holes larger than ¼ inch (where most small animals can enter)
  • Trim tree branches away from roofs and utilities
  • Secure garbage in metal cans with locking lids or in a locked shed
  • Remove pet food indoors after feeding, or use automatic pet doors animals can't exploit
  • Clean gutters regularly; standing water and debris attract animals
  • Install chimney caps and vent covers before animals discover them
  • Remove water sources like leaky outdoor faucets or pet water bowls left overnight

The animals in your attic didn't arrive randomly—they found an easy way in and a reason to stay. Addressing both stops future problems.

When to Call a Professional vs. Going DIY

Consider professional services if:

  • You've identified the problem but don't know where animals are entering
  • You're uncomfortable handling traps or working at heights
  • The animal is potentially dangerous (aggressive raccoons, venomous snakes)
  • You've already tried DIY and the problem persists
  • You need documentation for an insurance claim
  • Local laws require licensed wildlife removal for certain species

DIY may work if:

  • You've caught the problem early (one animal, minor damage)
  • Entry points are obvious and accessible
  • You're comfortable with basic sealing and exclusion
  • The animal is non-aggressive (lone snake, bat in a room)
  • You're willing to monitor and potentially repeat the process

The Bottom Line

Critter control is about both removal and prevention, and the right approach depends on your animal, your property, your comfort level, and your budget. Professional services handle diagnosis, legal compliance, and liability; DIY works for prevention and minor problems. Most situations benefit from understanding the landscape first—then deciding what fits your circumstances.