A brown paper bag vs wasps --- Guess who wins?!
Here is an effective and cost-free way to keep wasps away from you, your RV camper, or your home!
Get a common brown paper bag, blow it up, close it with a string and hang it wherever it is needed.
The trick is that a brown paper bag to wasps looks exactly like a hornet's nest! Consequently, the wasps will be fooled into believing that hornets have already preceded them and built a nest.
Since both wasps and hornets are territorial insects, the wasps will almost certainly stay away from the area!