Ants are one of the biggest "nuisance pests" because they can easily enter through small cracks and can nest anywhere in and around your home. Species such as Argentine ants produce colonies that can contain tens of thousands of workers and numerous queens.

Spiders invade your home through windows and doors
and can also be carried in on firewood. They can cause unsightly cobwebs and a few species have bites that can be painful and sometimes require medical attention.

Cockroaches can enter through small cracks and crevices, vents and pipes, and in grocery bags or on firewood. All cockroaches
are omnivorous and will eat
virtually anything people will. They carry numerous diseases and can contaminate food.