Anyone tried or heard of using Vinegar for this????

4. Deter Ants Spray vinegar around doors, appliances, and along other areas where ants are known to gather.
5. Keep Cats Away Keep cats away. Sprinkle vinegar on areas you don't want the cat walking, sleeping, or scratching on.
http://www.kitchencraftsnmore.net/vinegar.html

Just curious. I thought maybe I could use this for the places that I don't want my kitties getting into. Like there is this space around the washer and dryer and I don't want them to get in there and get stuck! Then, there is an electric fireplace in the living room and I don't want them inside that thing.

Yes I have heard of it and have used it..worked fine for me...

vinegar makes my cat pee near where i use it- so can't say I had good luck with it