I do that too. Actually I add about 3 every year so I'll never suddenly realize no one is laying eggs.I am aiming for about 1/2 that number. Another month or so, as we head into cooler weather, I'll be looking to get another few POLs. My older girls have now passed the 2yr mark, though still laying well, & I want to keep egg production relatively high. Hopefully it will then stabalise for a few years until the older girls start passing on.