you don't really mention why the dog treat business is slow or what exactly you have done to promote it but I agree you should focus, focus, focus otherwise you will get nothing productive done.

I would think that even in this economy a dog treat business would be profitable. how about these ideas if you haven't tried them already:

1. do you have a website? If not, you really need to get one.
2. what about going to local networking events such as chamber events and others? I get great success with my business by going to these.
3. what about dog shows or other related events? These may cost money but you could potentially do very very well there.
4. what about contacting people who are advertising that they are selling puppies? some of them may be wiling to pass out some flyers for you.

Just a few ideas that came to mind.