I have small brown, possibly weevils, that have infested my car. I don't believe that they bite. I have sprayed an indoor product, vacuumed extensively, and even set off a "bomb", with the trunk cavity open to the cabin. However, they always seem to return. I am afraid that they are either in the dash or the foam of the cloth upholstered seats. I really do not want to get rid of a car with thousands of dollars, over some bugs. As one final problem I have a 2.5 year old. So any treatment will have to be safe for toddlers a few weeks after applied.