Interesting. Maybe Spinosad is worthy of some research. I noticed today, several days after giving the IVM, that one of the biggest flea-magnet cats’ fleas seemed more lethargic than usual when I was combing her today. They weren’t trying to jump off the comb. Maybe it’s just wishful thinking. But I figure it can’t hurt to give them another small dose in another month.
Yeah IVM once a month for heartworms and any other worms. IVM won’t bother the fleas though.