I hear you. Someone 'visited' my backyard shed recently, and I'm still irritated about it. I let people in the neighborhood know that I wasn't happy, just in case it's a kid that belongs to someone and they're aware of it. If people would spend as much time getting a job and working it as they do thieving, they'd be a lot better off financially. Is there some sort of deterrent product you could spray on those areas that would discourage the dogs from chewing on it? Sort of like that nasty tasting stuff someone created for nail biters? Obviously something non-toxic, of course, that wouldn't harm the dogs or the plants themselves .