I have tried several things to get the flea population under control with dh's hunting beagles.....they are a good 75 foot away from the chicken pen...so I have not seen ANY in the chicken yard......but those dogs are going nuts! I am at my wit's ends....I don''t want dh to spray chemicals if possible due to my letting my girls out to free range part of the day......I need help and ideas if possible...thank you for any help. I don't want to have to get a guinea, if I can get away with it......I think that they are what eats fleas? I may be incorrect......