Fyi you can make your own probiotics cheap by feeding/making yogurt (SUPER EASY) for your chickens or kombucha (less easy). My chickens go insane when I chop up the scoby for them and they love it when I mix yogurt into their feed
Edit: fermented feed is also probiotic!
I may try all these
I wonder if Save a chick will work? I still have a few packs hanging around.
I dont know if the regular electrolyte one would work but they actually make a probiotic formula too
I'm gonna look that up