I'll need to give this a try... my Euro Snowflake also has tail rust, and I think one other pony may be starting to get it as well. But what I want to know is, do you think it's worth it to open up all of your ponies, clean their insides and replace the metal washers with zip ties to prevent tail rust, even if they don't already have signs of rust?
If your cat is peeing somewhere other than in the litter box (or outside if the case may be) then it means there's something wrong. Either they're ill, or they're stressed because they don't agree with a change, be it in their surroundings, their food, their litter, or the people or animals living with them. They are very sensitive to these things, and they have no other means to tell you they're upset but to pee or poop in a different place. They aren't spiteful creatures, despite what so many people seem to think. Also, often when young male cats reach puberty they start peeing on literally everything – beds, furniture, carpets and tiled floors, curtains, books, clothing... mine even went on the stove top. But as soon as we got him fixed, the peeing instantly stopped. It was as if he was possessed and not able to control himself until he had the snip.
I keep my cat out of my bedroom only because she won't leave once she's in there and I can't get her out when I need to sleep. If I try to sleep with her there, she gets restless because I toss and turn a lot. But she does also get up into places where there isn't actually anywhere for her to stand or sit, and end up knocking things over – that much is true of all cats.