I’ve sprayed my backyard with Permethrin and Bifen IT EIGHT TIMES over the past two to three months and I’m still getting fleas off my dogs. Neither of the two poisons that I’ve listed work to get rid of fleas. I have wasted at least $100 buying your products that you said would kill fleas and they do not. Can I get my money back?? I even mixed the solution at 3 times the potency that you recommended. 3 ounces per gallon of water. You recommend 1 ounce per gallon. I would be satisfied if you’d just send me a poison that actually works. Free of charge of course since I’ve already paid for poisons that do not work. Please send at least 16 ozs or more. I’m sure you still have my address and information on file .