Hi Debra! I guess Billy has been checked for any urinary or bladder problems??

Entering the 3rd day. I put the drops in one of the water bowls. Believe I am still getting pee in my daughter's room, just in a different corner. Billy has become like a ferret peeing in corners.
Not sure the remedy is solving my problem with Billy's out-of-box experiences.

I tried it several years ago on an extremely anxious dog........didn't do a thing. :(

Poor Billy. He certainly needs to learn how to talk so he can tell you what the problem is. Thank heaven you are such a kitty lover and so patient. How many people in this world would just get rid of him. I hope you get this figured out.

Have you tried different types of litter? I had a cat once who peed in the shower stall instead of using the litter she'd been using exclusively in the room she'd had before- all in the same house. Changing the litter cleared it right up. Other things that have been working with the growing ex-ringworm kittens are adding more boxes, and getting upset in a way they directly associate with out-of-box events. I found a hooded bed with 5 piles of poop in it, voiced my horror, and immediately set them up with an extra box with a different type of litter. Knock on wood- not a single problem since then. In the other room, we have one little guy who pees on one bed- which is now gone. And he peed in every single cardboard box bed, so I started making inverted box beds with a back glued on. He leaves the "chaise lounges" alone. I know you've tried a million different things, but I'm just suggesting some non-standard thoughts that have worked for me.

And I've only heard of using RR orally- direct in the mouth or in water. Is direct-in-the-ear supposed to diffuse through thin ear skin?