Paper wasps often build nests in residential yards, so one of the main signs of an infestation is the physical sighting of the nest itself and nearby wasps moving around the nest.
The best way to prevent a paper wasp infestation and the potential of getting stung is to make the home less attractive to the stinging insect. Before trimming shrubs or hedges, or picking fruit, check the plant for paper wasp nests to avoid contact with these stinging insects. Seal cracks and crevices in the home with a silicone-based caulk, repair any tears in screens, and try to keep doors closed to prevent paper wasps from entering the home.
Keeping food covered, especially when outdoors, will also help keep these insects at bay when they are in search of nourishment. When spending time outside, people should avoid wearing strong fragrances and opt for unscented hygienic products. Likewise, they should wear shoes that cover and protect their feet from rogue paper wasps.