So our St Bernard puppy has been chewing at the carpet (pain in the arse when you step on a carpet tack!) lately and so in order to alleviate the problem I have sprayed this stuff on the areas he seems to chew
http://www.petcarecentral.com/sy-00055.html
The downside, is this last time i got some on my hand apparently and didn't realise until i touched my mouth, which flooded it with a horrible taste that i couldn't get out for nearly 30 minutes! Even now if i lick my lips i can still taste it, YUCK!
If this stuff doesn't get him to stop chewing, I dont know what will!