Anyone used these? We give our doxie Comfortis, and we love it, but Whit is way too small for it, and I'd rather go the pill route so we don't "wash off" the flea stuff. It's OTC at 1-800-PETMEDS, and I'm kinda wary of anything OTC. Maybe just a bias, so I'm hoping to hear from you guys.

Thanks!
ETA: I wasn't paying attention to the fact that I'm in general discussion when I posted. Sorry!