I had rabbits until I was about 25. I vaccinated them but never did anything for worms/mites etc. I was reading the adoption paperwork for our new guineapigs (first time we've had them) and it says I must protect against them. Does that mean use a spot on? And how do you worn a guinea pig? In fact how do they even get worms? Any advice on te above would be greatly appreciated for a newbie 