the new cat is very shy and nervous, and runs under the kitchen units (where you cannot grab her) if you glance at her sideways. She has diarreah and needs to be wormed. the vet gave me a paste to give her 3 times a day for the diarreah. How do i administer? can i smear it on a piece of ham or will it make it worse. I have tried spiking her food but she won't eat it if it's been tampered with. As for the worming, has anyone tried the spot on is it any good?