I read that people throw some cracked corn or whatever on the pine litter in the coop every so often to get the chickens to stir up the litter. Last night I read (not here) that you shouldn't do that because the chickens eating in the proximity of the poop can increase the chance of them getting worms. Has anyone had this problem? This is aimed at people who use pine type shavings and deep litter-not sand people.