05/02/2026
There is a lot of confusion about paper wasps around March and April. In some locations, I have seen them flying and hanging out by the hundreds!
Does that mean you have a very large active nest or a huge problem? The answer is NO!
Paper wasps have now just begun to form active nests. Any larger nests you may see around your home are actually inactive nests from the previous season.
In fact, the ONLY paper wasps that survive over winter are fertilized females. The fertilized females often cluster together in dry areas like eaves, attics, wall voids, and etc. They go into a state of hibernation called diapause.
So, the reason some may see a wasp in their house on a warm winter day is that the warmer weather may cause them to temporarily come out of hibernation and possibly "accidentally" find their way into your home.
I have been asked frequently what you can do to prevent them BEFORE a nest is built....or to stop them from annoyingly fly around your home in the early spring. In all honesty, I really would be disingenous if I told you that you can (prevent them)....and I would just be taking your money for nothing to "treat" for them. As I have told many customers over the years, it's pretty much like saying I can control flies outside in this state.
The good news is....in this phase, they really are NOT terribly aggressive. They become aggressive once they do begin to build their nests and workers are present.
Once a nest is present, THEN I can treat the nest and eliminate the problem for you. Do NOT waste your money by paying someone to treat prior to about May.
Left untreated and later in the season, the nests can grow fairly large. At this point, Drones (males) have the ability to mate with Gynes (females).
Then, the cycle is complete. Fertized females are ready to hibernate over winter and wait until spring.