1/2 teaspoon for 5 gallons of water is perfectly safe for both humans and chickens.
It keeps bacteria and algae from growing in the water.
You can also use 6-8 drops per gallon
http://www.i4at.org/surv/bleach.htm
It keeps bacteria and algae from growing in the water.
You can also use 6-8 drops per gallon
http://www.i4at.org/surv/bleach.htm