Hi , I'm James DVM MRCVS and would like to help you with your question
By the sound of it , it would seem a viral form of conjunctivitis has taken hold of your business and is transported from dog to dog.
dog like the ones you are describing are even more in danger of catching various eye disease due to the nature of their anatomy
Bathing with warm water will not help .
what you must do is have someone located all the infected (a vet ) and give you eye drops . Isolate them from the rest before you have all you club infected .
Till that point in time you can use green tea bags on the infected - that will help calm the presenting inflammation