I used Activyl 2kg every month on all my 8 little dogs (6 Chis and 1 Yorkie) to prevent the flea. Got it from my vet. No sign effect and is more gentle than other flea stuff like Programe. I cannot put this on my super small Chi girl as she is under 2kg. I like Activyl and have also switched my cats one to Activyl too. Here in the UK is not very new, I think it's at least 2 years and a lot of the vet practices use them here.
PS I am still using Program Plus tablets for the dogs, once a month as one of the Chi girls have bad skin problems, so the tablets are for prevention but make that stronger, because I cannot afford to have a flea bomb in the house with mutli pets here.
PS I am still using Program Plus tablets for the dogs, once a month as one of the Chi girls have bad skin problems, so the tablets are for prevention but make that stronger, because I cannot afford to have a flea bomb in the house with mutli pets here.