Hi, I'm so glad Frank is back at home, and is improving. Being at home will definitely help him heal, and TLC from mommy. I agree the bathroom steam would work the best, but if it stresses him out too much, then the vaporizer would work. Is it the running water that he stresses over?, or just being in the bathroom? If its just the water, then maybe you can run the hot water for a while, or the shower and close the bathroom door to steam it up, then shut off the water and bring Frank in there. You could also put the eucalyptus oil in the bathroom with the steam. I just wanted you to know that the excess peeing is also normal. Many medications can cause him to have to pee more, and also because he's been on IV fluids at the vets, so he has lots of extra fluids to get rid of.