Is it safe to seal the hole where wasps are going into my wall?
No. This is the most common wasp mistake Pomona providers get called to fix, and the result is wasps in the living room. The right order is dust into the gap, a few days to a couple of weeks for activity to end, and only then caulk or mesh at the Pomona entry.
Should I be worried about a nest in the ground?
Ground nests cause the most stings around Pomona homes, mainly because people do not know they are there until a mower or a foot lands on the entrance. Flag the spot from a distance. Keep children and dogs off that part of the Pomona lawn until it has been treated and confirmed dead.
Can wasps damage my house?
A little. The worst cases in Pomona involve perennial or very large void nests where the comb fills a wall bay and moisture from the colony damages the drywall. That is uncommon in a local climate but not unheard of, and a Pomona provider who finds one may recommend opening the wall.
Will wasps come back to the same nest next year?
No, wasps do not reuse a nest. The colony dies in fall and only the new queens survive, hidden under bark or in attics around Pomona until spring. A queen may build a fresh nest near the old site, though, so removing the old comb and sealing gaps at a Pomona home reduces the odds.
Can I just leave the nest alone until winter?
Sometimes, yes. A paper wasp comb high on a Pomona gable, away from doors and play areas, can be left to die naturally at the first hard frost. Nests near entrances, in walls, or in the ground of a Pomona yard are a different story, because colonies grow and get more defensive through September.
Is cost the main reason people leave wasp nests alone?
Not according to the available survey evidence. The same question comes up in Pomona: in the Moths and Butterflies of New Zealand Trust's mid-2025 survey of 1,055 individuals and 100 restoration groups, cost was named as a wasp-control barrier by 17%, behind knowledge at 26% and time at 19%; the unweighted responses come from New Zealand. In Pomona, ask providers to put the number of visits and any re-treatment terms in writing before work begins.
Do most people try to control wasps themselves?
A number that shapes expectations in Pomona as much as anywhere: doing something about wasps yourself is common: 69% of individual New Zealand respondents in the Moths and Butterflies of New Zealand Trust's 2025 survey said they had taken part in control, though the opt-in sample likely over-represents motivated people and does not reflect U.S. homeowners. For a property in Pomona, the next step is an inspection that identifies the source, not a guess based on national averages.