I agree with Mary with the use of the needles!!! I keep the IV line for a month. I think you will find Brico very reasonable evne for the West Coast!! And Hugh is a very nice guy, please feel free to use my name as the one who gave your their info: Sandra, Flemington NJ. There are about 100 needles per box, which costs about $6.00+ change. As far as the vet goes, I watch the cat carefully, note eating, output, and behavior. If there is a significant change, I will call the vet...OR if the cat is going in for a vet visit(q six months) then bloodwork gets done. Please do not get stressed, you will see that once you get a handle on things, you will be a pro!!!