I have a quick question
I discovered my cat has worms, despite me worming every 3 months - I think he's been out mousing at night, so probably picked them up from that.
So, I've given my 2 cats and my dog drontal and flead them all with frontline (all appropraite doses for their weights)
So my question is.....if I KNOW he has worms, should I follow up with another de-wormer? or is one administration of drontal enough to zap them completely??
