How should I worm/vaccinate my birds?

[safarichick101]

I have a flock of 11 and they free range quite often. Sometimes all day... I was just wondering what was the best method to vaccinate my chooks. They are going on 2 years in february. As far as I know they only have the mereks disease vaccine. I need something that keeps the worms and germs out of my chicken's tum tums!

 

[naked_heels]

I have tried Wazine 17% mixed 2 table spoon with 1 gallon of water, removed the water during the night and fill that with your mixed gallon and let them have it in the morning. The other method I've tried is mixed cooked rice, black pepper,smash garlic and lemon grass together and give it to them in the morning when they're very hungry. Hope this help