Guess you didn't read my post either. Food flicked on the ground is not sanitation. Any system that allows it is feeding the rats.
Rats cannot chew through metal. Not sheet metal nor metal wire. They can chew through just about anything else. A sealed metal container is rat proof.
I actually have and use Al's rat proof feeder. That is because the metal feeder I was using allowed chickens to spill feed on the ground. Not rats, but the mice were in heaven. When I switched to his feeder, my feed loss went to practically nothing and the mice went away.
It is about the only method I have ever found that allows chickens free access to feed on demand, yet excludes rats, mice and other vermin like sparrows and starlings.
Rats cannot chew through metal. Not sheet metal nor metal wire. They can chew through just about anything else. A sealed metal container is rat proof.
I actually have and use Al's rat proof feeder. That is because the metal feeder I was using allowed chickens to spill feed on the ground. Not rats, but the mice were in heaven. When I switched to his feeder, my feed loss went to practically nothing and the mice went away.
It is about the only method I have ever found that allows chickens free access to feed on demand, yet excludes rats, mice and other vermin like sparrows and starlings.