Begin with the fact that some pest control companies offer service contract that are for treating only specific types of pests. Therefore check out if the pest control company can help you with the types of pests that you have infested in your home or office.
Moreover, be careful with the contracts.
Why sign a contract when you are not facing a constant infestation of pests, but it has happened only once?
That is to say you might not be in need for constant periodic inspections.
Henceforth, you should pay special attention to guarantees too. Make sure that you find a pest control company that can provide you with a guarantee that covers and determines of there is a yearly inspection charge taking place.
Thereupon, the guarantee stands for the situation when the pest control company should take the blame for any structural damage that has been caused, or in the case when the treatment fails to control the termite infestation.