Hopefully its ok to ask on here...... Does anyone know of a good natural flea treatment? I'd rather not use the chemical ones as my dog has sentistive skin. I have a natural soap to wash him in but the fleas are soon back. He is bitting himself so much. I cant find many fleas and he also rolls in the grass which I dont think helps him either. can anyone recommend anything? ....oh and he is a border collie (shorthaired)