A week ago, a wasp nest was found under the front porch at the right corner. My husband sprayed water to knock it down..

Second day, another one was build right away at the opposite corner. The next day (yesterday), he sprayed water again to knock it down.

This morning 2-3 wasps have been circling and hanging around under the porch and often flying RIGHT UNDER THE DOOR FRAME. We have problems now trying to get in and out of the front door, for they are always there at the door. I have to open the door a little to warn them in order for them to not getting on my way.

Basically, we do NOT want to kill them but just do not welcome them to hang around our front door to pose any danger to especially children (I have children coming to my home often). They would be very scared. What can we do to prevent the wasps coming back after we knock down their nests? And what else we can use to make them not like our porch.

Thanks