Eero is going on 4 months now, and I'd like to think he's reasonably housetrained. His last accident was about a month ago and he will bark to be let outside. However, I've noticed wetness in his crate -- pee! I've washed his towels (what he sleeps on in his crate) and it seems like immediately after replacing it in his crate, he will pee on it within a few hours. Is this marking or has he started associating his crate towels as peeing areas? I know dogs typically don't like to urinate/defecate in their place of slumber so I am confused.