I have administered Revolution since I got Maggie and never seen a flea. Two days at my sisters and she is riddled. While I was there, the only thing was their flea shampoo,foamed and rinsed but huh,, waste of time. Brought her home and put on Revolution...... still fleas.
As border collies are allergic to some stuff, invermectin in particular has anyone experience in border collies and flea treatment?
I did a search here and see that several of you swear by comfortis, not sure as it is internal and could make her sick if it contains invermectin..
I will take her for a beach swim tomorrow morning to see if we can drown the suckers. Damn I am scratching just thinking about them, bad as head lice..