As in preventative treatment, or treatment after they have it? My girl is on Sentinel for heartworm and fleas and some other worm, and I guess it's working. Never had a dog diagnosed with it though - I've heard it's expensive. Does one of your dogs have it or are you just seeking info?
"Remember - every time your dog gets somewhere on a tight leash *a fairy dies and it's all your fault.* Think of the fairies." http://www.positivepetzine.com"