I've just had my first case of strike in a Soay, I thought they were very resistant and its never happened to my flock before. Consequently, I stopped using pour on a few years back but now regret it. I used to use Click but notice that people mention using Crovect to kill the maggots when treating. My question is does Click also kill maggots or is it just preventitive? Click lasts up to 16 weeks against Crovect at 6 weeks so for me, with difficulty in gathering them in, Click wins through. Just concerned as to whether it will also do treatment. In my recent case which was quite severe, and disgusting to deal with, the animal was crawling with maggots in most places. I sheared right back, removing all maggots I could find and applied maggot oil, again not sure if that actually kills any that are missed. Its an awful thing to happen, I certainly hope it doesn't run in families or I can expect more in future.