Our puppy is just over nine months old, and we find her chewing/tearing up the plastic tray at the bottom of her crate when left in there too long. We are almost certain it’s boredom. We leave her out as much as we can in the evenings and on weekends, but have to crate her while we are at work (though I work close enough to come home for lunch every day and let her out) - which is when most of the destruction seems to be happening. We’ve tried three different kinds of deterrent sprays on the section of crate she chew(bitter apple, bitter cherry, and peppermint), but she seems unfazed by them. We try putting toys in the crate with her so she can entertain herself, but that doesn’t seem to do much either. Any advice? She only likes to sleep in the crate, so when we put her inside for an hour or two for a nap she’s fine - it’s the extended periods of time that are problematic for her/us.