I am trying to treat my peafowl for fleas...they were fine all through winter but suddenly the fleas are everywhere. I have some Harts Ultra Guard Flea and Tick Home Spray and also the powder for cats. Is it safe for use on the peafowl? I sprayed permethrin all around their coop and now need to apply directly on the birds. Before I use permethrin I thought I would see if the Harts flea powder for cats would work well. Does anyone have any experience in this regard?