How to Stop Fingernail Biting / Bitrix

So I have a problem. And that problem is that I like to bite my nails. I recently noticed that Bitrix is the most bitter substance and that it’s added to several chemicals to deter people from eating them. Is there any soap or lotion that can be used on the hands to deter me from picking? This seems like a pretty good idea to me and usually if I have a good idea someone has already come up with it. So what do you guys say? Thanks in advance!