I live in a newer subdivision and we are starting to get more birds around, and some stray cats. I mention this coz I use a product called Beat It! that is an insect repellent. So far, neither cats or dog have gotten fleas. Down side is that it's only a repellent and necessitates spraying every 8 hours. None of them have gotten ill from it but really detest it being sprayed on them (sometimes I spray it in my hands before applying to them). Ingredients: Lemongrass, Cedar, Citronella, and Mint Oils blended in a base of Purified Water and Coconut Oil
If you're more interested in it, check out buybeatit.com
If you're more interested in it, check out buybeatit.com