Quote: that will vary by chicken. Think about how too much calcium can cause some guys to get kidney stones while others just consume calcium to no end with no bad results. So of course there is no warning on milk or cheese saying not to over consume for risk of kidney stones.
Every owner has to use what works for them though. I get my feed from Rural king and can't really speak of the TSC brand. The TSC store near us had grain mites and chose to keep the bag of mite invested food for well over a month allowing the mites to spread. I won't buy food there unless I have too. I'm sure there are good TSC stores, I'm just avoiding the one.