Our dog got loose from the yard and was picked up and sent to the pound a couple months back and brought back with him fleas. They have gotten out of hand in a bad way. I've bathed him and treated him and put a flea collar on him and he is now flea free. For the past 2 weeks Ive sprayed where he was staying since I've moved him elsewhere outside the yard. The spraying has done nothing and the fleas have taken over my yard along with the main coop. I've used Pyrethrin and triazanine and neither seem to have made a dent in them. I ordered a new 50 pound bag of DE yesterday but cant wait for it to get here. Everytime I go out to feed and water I notice them everywhere and am just worried the chickens are gonna get flea bitten next and my boys can't even go outside due to the infestation. I've had dogs all my life and dealt with fleas in the past but this is the worst I've ever seen and can't get them under control and don't need them getting in the house. Anybody have any ideas what to do? I've got deep litter in the coop so I'm sure that will all have to be removed and burned maybe unless the DE does the trick.