You dont have to worm them every three months,I live in Bedfordshire and I dont worm mine at all,Iwould only if I saw it in there poo,and I keep a watchful eye on it,its no wonder the poor little thing is having the runs she doesnt have time to recover from one lot of tablets before more come along.And as we live in a cold country I only use flea stuff when they actually have them and spray the house as well,I just cant agree with vets who want to sell you allthese things, and luckily my vet agrees with me.Yorkies are so small that all these medications going into them cant be good.Sorry for the rant,Gill |