I wasn't sure what to do either as this was the first time for me to worm and I did it as a prevention - not becuase I saw worms...
I found this site:
http://www.sweeth2o.us/health.html
I used the exact same method for three days... that is 4cc per gallon of the 1% injectable (I had some already for the dogs) and all my chickens are still alive and I haven't seen any worms.
I never saw any to start with though so that proably wasn't helpful to know!
I was scared of using it because when I worked at a vet. clinic and we were drilled about NEVER o'ding a dog on ivermectin. But all the chickens are ok after this and they are bantams.
Good luck!
I found this site:
http://www.sweeth2o.us/health.html
I used the exact same method for three days... that is 4cc per gallon of the 1% injectable (I had some already for the dogs) and all my chickens are still alive and I haven't seen any worms.
I never saw any to start with though so that proably wasn't helpful to know!
I was scared of using it because when I worked at a vet. clinic and we were drilled about NEVER o'ding a dog on ivermectin. But all the chickens are ok after this and they are bantams.
Good luck!