I have 28 eleven day old chicks and 11 three day old chicks in brooders in my room. I clean out the brooders daily, twice a day if needed, and bleach the whole thing weekly. They get acv in their water and are on unmedicated chick starter. They eat like feathered cattle and sleep between spells of eating and "flying" around the brooder knocking stuff over. All in all, happy chickens. Today i noticed a foul smell. Like..."holy hell did i step in cat poop and kick a skunk?!" Foul. There are 1-2 runny poos in each brooder. Not bloody, not off color-but STANKY. Kinda like my 12 week old girls poo every fifth or so time they poo. Nobody will fess up to who did it (chicken solidarity), and they are all flapping around knocking food everywhere as usual. Should i be concerned?