Keeping Bees and Wasps Away

Here's a trick I saw on Pinterest.  Haven't verified it yet but you can try it when you're sitting on the deck, and especially if there is food around, place one or two lemon halves with about 10 cloves stuck in each one. (I have to say though, it looks like a lot more than 10).  I understand bees and wasps don't like the scent.