Hi! I am using a product called Pig Swig. You put 2 tablespoons in 1 1/4 gallons of water and they just drink it. Then you do it again in a month. It has the poultry directions on the container. I have only ised it with chicks, haven't had worm trouble with mine while they were adults, so I don't know about egg consumption while on wormer. I know there are a lot out there, this one seems to work well for us. Good luck!