I am looking at the First Defense product to help us deal with a flea problem. Our house is mostly hardwood floors, but we also have wall-to-wall carpets and rugs, including oriental rugs. I’d like to know whether the product can cause any damage to carpets or rugs, and whether it will leave any visible trace or residue on any of them, including ones with dark colors. Also, can you tell me whether the product lasts as long on woven rugs, which are not as thick and don’t have the same texture.
We have 10 cats in house which never go outside in the yard. We have a large screened in patio where they spend much of the day light hours. Several of these cats we are not able to handle or catch so brushing or washing is not possible for some of them. I realize the problem but am hopeful you and your products may be our answer. We vacuum and clean daily so are willing to do other things you may suggest.