I've just adopted a lovely pair of 5 year old rescue cats. I want to religiously keep on top of defleaing/ worming (they will go outside in time) but I'm not sure how best to do it - is it worth signing up to the monthly plan the vet offers, or the plan pets at home offer, or just buy myself? Any advice or brand recommendations etc appreciated! (I'm also worried about getting the treatment onto a nervous cat - tips about that very welcome too!)