Plastic dermatitis even if it's only the water dish?

[BitsyNaceyDog]

If you saw my other thread you'd have seen that that has been tried already. lol I think we've tried a combination of 100 different things so far. Thanks a bunch though!!!

I saw it after I wrote this.

I've never heard of plastic dermatitus either. What happens to the dog?

The dogs I've seen with it have had bumpy red muzzles, even a bit swollen.