Preparing oyster shells

[chick-e-pie]

We live in western Washington state where oysters are plentiful. If I want to use the shells I have. What do I have to do to them to make them small enough for the hens? Can I pulverize them with a hammer or do they have to be ground fine? I'm hoping for the hammer option.......good stress relief!

 

[eggzettera]

My bag of oysters shell are not "fine" (like sand) more coarse (like small pebbles). Think hammer should to the trick....wear some safety glasses and BAM away.

 

[allen wranch]

I think I read that regular fresh oyster shells are not good for chickens. They need to be processed to remove some of the toxins they pick up in the ocean.

Diana !!!!!!