Acidified Copper Sulfate can aid in the prevention of Crop Fungus in pigeons, chickens, and other poultry. It can also be used as a preventative and treatment for blackhead in turkeys and canker in chickens. Additionally, can be used as an antimicrobial to sanitize water lines and waterers for poultry.InstructionsDilute 1 pound into 2 gallons of water. Then add this stock solution by mixing 1 ounce into 1 gallon of drinking water. To treat disease, give the final dilution as a sole source of drinking water for 7-10 days. Dump and replace the final dilution drinking water every 24 hours during the entire treatment period.Size1 lb bag