|Seal openings that allowed hidden nests in voids last year|
It is important to note that while wasps do not reuse old nests (an exception to this is European paper wasps), they can reuse spaces. If a person had a problem with a hidden nest, i.e. one that is in a wall void or other space within a building, now is a good time to seal the opening where the wasps were flying in and out. This will help prevent new queens from starting any new nests in the cavities.
This is also true for ground nesting wasps that were found on your property last year. Queens construct nests in old rodent burrows and similar sites. Now is a great time to fill in these entrances so new queens are not able to start new nests in those spaces.
As long as temperatures remain cool, wasps will be generally inactive. But on days with warm, sunny weather, wasps may be seen in your home. The only necessary control is to physically remove (or crush) them. You can also capture them and release them outdoors.