To keep wasps away you can make a homemade wasp trap with a jar with a lid or a two liter bottle.
To make a homemade wasp trap with a jar follow these directions.
Punch a hole into the jar lid that’s about as wide in diameter as the base of your pinky finger.
Fill the jar about 1/2 full with orange juice or some other sweet smelling liquid.
Smear raspberry or strawberry jam underneath the lid.
Seal jar with the lid then place it at the back of the yard or some place away from foot traffic.
The wasps will be attracted to the sweet smelling juice and jam and will crawl into the jar and eventually fall into the juice and drown.
For the bottle version of the wasp trap here's the directions.
Take an empty two liter pop bottle or any plastic bottle that has a consistently even width along the sides.
Using a sharp knife, cut off the top of the soda bottle just below where the start of the bottle sides are at even width.
Fill the bottom of the bottle with bait about 2″ deep (ideas below).
Insert the top of the bottle upside down into the bottom of the bottle (remove the bottle cap first). The pieces should fit together nice and snug, but you should use some duct tape along the top edge to secure the pieces together if you need to.
Set the trap out wherever you’ve seen them.
The wasps will fly into the trap to get at the bait, but have trouble finding their way out.
They’ll eventually drown in the liquid bait.
You should also remove any wasps nests to keep the wasps away from your home or areas around the home after you kill the wasps with the wasp traps.