I was wondering how many of you regularly deworm your chickens. I only have six pullets in a small backyard. I regularly pick up droppings in the backyard and am using the deep litter method in my covered outdoor run. What products do you use? Is anyone familiar with Flubenevet? I believer you can only get this in the UK. Supposedly no withdrawal period. How frequently do you deworm? Is there any truth that chickens can develop a certain resistance to parasites? Also does anyone regularly use product for the prevention of lice and mites as we would use a monthly product for heartworms, fleas and ticks for our dogs?