Many pest control services offer free inspections, but once the contractor determines the nature and extent of your problem, costs for treatment programs will vary considerably depending on what kind of pest you need to get rid of and the severity of the infestation.

General Insect Control

For the control of common pests, such as cockroaches, ants, crickets or centipedes, pest control contractors will generally spray insecticides indoors or outdoors as necessary or set baited traps. A one-time treatment may cost as little as $50, but some contractors may charge $150 or more.

After an initial treatment, contractors will often guarantee that your home will be free of insects for a limited time, but they will urge you to buy a program of regular treatments to ensure that the pests don't come back. Contract programs typically cost $200 to $500 per year.

Bed Bugs

Bed bugs are more difficult to control than many other insects, and effective control typically involves multiple treatments over an extended period of time. Treatment programs usually include a thorough initial inspection, an initial treatment, and follow-up inspections and treatments of all affected rooms. Costs vary depending on the size of the area that needs to be treated, but expect to pay between $50 and $200 for the initial inspection and between $250 and $900 for each room that requires treatment.

Termites

Contractors use several different techniques for termite control, and an individual contractor may offer a choice between more than one of these techniques. Costs vary depending on the treatment approach and the size of the home. Treatment of a 1,250-square-foot home with a liquid insecticide will cost between $1,350 and $2,000, and tent fumigation will cost between $1,200 and $2,500.

Some contractors will offer a program of baited monitoring stations around the perimeter of the home. The annual cost of these programs includes monitoring visits and may or may not include the cost of any required future treatments. If you're offered one of these programs, get a detailed written description of what's included in the plan and any guarantees that go along with it.

Bees

Honey bees are beneficial insects that are indispensable for their role in plant pollination. Because of this, you may, if you're lucky, be able to find a local beekeeper who will remove an inconveniently located hive for free; contact your local beekeepers' association for information. For removal or extermination of Africanized honey bees, yellowjackets, wasps or other stinging insects, expect to pay a pest control contractor between $100 and $400. Costs may be higher if the removal requires demolition to get at hives inside structures.

Rodents

Treatment for infestations of rats or mice typically consists of an initial inspection to determine what type of rodent is in the home, followed by setting of traps. During the initial visit, the contractor will usually assess the damage that has been done by the rodents and attempt to locate their points of entry into the home. During follow-up visits, contractors will dispose of dead rodents, re-set traps and possibly seal entry points. Depending on the extent of the infestation and the number of follow-up visits required, control of mice or rats may cost between $200 and $2,000.

Wildlife

In addition to the most common insect and rodent pests, many pest control contractors will also remove wild animals that move into or become trapped inside homes. Cost for the removal of these animals varies depending on the type of animal and the difficulty of the removal process. Expect to pay between $300 and $1,500 for bat removal, between $100 and $600 for snake removal, and between $300 and $1,500 for squirrel removal.