Some other fsters have used them successfully for anxious dogs. not sure it will help with destruction. You may want to try something like the CD"s "thru a dog's ear" paired with a pheremone collar. Or just stick to the crate
I used a thunder shirt a few times for Penny as she now reacts to fireworks in fear. She will often end up in my arms though so not sure if the shirt helps or just my giving her a big bear hug (I know I know there is a line of thought about "not encouraging fears" but it works!). I should actually try it to desensitize her to the dishwasher (the even monster!)