You should look for a company that uses green and sustainable methods to get rid of pests. There are a lot of companies that use harmful, toxic chemicals to eliminate pests, and these chemicals can be extremely dangerous not just for the pests but also for your family and pets. It's important to find a company that uses green methods instead, like traps, heat or cold destruction, or predator insects. These methods are safe for your loved ones and the environment.
Check for any signs of pests. Look for droppings, shed skins, chewed material, or corpses of pests. If you see any evidence of pests, it is likely that they have been living in your house and have been exposed to the pesticides. If you are confident that there are no signs of pests, then ask the company to provide documentation of their pest control treatments. Make sure to ask what chemicals they will be using and how they plan to protect your family and pets from exposure.