[i give them plenty grit, is this an issue and in what way? also, i feed them only once, but usually find there are still a little left the next day in their troughs so they arent going hungry.
areet,..imo you will attract rats and disease this way, and it also doesnt look very tidy imo having corn left in troughs etc...
i feed mine 3 times aday, never a grain left, and if there is, back in the bin it goes for next time