Over dit dier

I have been caring for some (6) kittens and their 2 mothers till they were old enough to eat solids to be adopted. they’ve reached that age. They keep getting eye crust (I think it’s pink eye) but I don’t know what it is. I’ve been cleaning their eyes with warm water and besides that’s & some excepted fleas they are pretty much normal. shelters are full, we cannot care for them any longer.