Insecticide should not be needed for earwig control indoors or out, though we have heard about abundant earwig populations around the state this year. One theory is that our wet spring weather supported population growth, and maybe their predators just haven't caught up yet. Keeping them out from wandering indoors is the same approach as for other nuisance insects: making sure as many gaps/cracks are sealed as possible. This includes repairing any torn window screening or replacing any worn-out door weather-stripping, if applicable, plus sealing any gaps around pipe or wiring insulation where they enter an exterior wall. Like other night-active insects, earwigs can also be drawn to night lighting, so you could try turning off any porch lights or landscape accent lighting if it's used near a door or window. If you irrigate the garden, try to do so only when the plants need it (when the soil a few inches deep becomes somewhat dry to the touch) and in the morning, so the surfaces of the plants and mulch can dry off by nightfall, since earwigs like dark, damp, cool places. The page linked above provides a few other control tips.

Earwigs can do some plant damage, but are not usually serious plant pests, nor do they damage home interiors, and they also consume other pests and help to recycle organic matter into nutrients plants can use. Why they were not a problem in the decades prior is hard to say, but something changing in the environment might be a factor, like the loss of a certain type of predator, changes in the amount of tree/shrub shade or moisture-retentive areas that give them shelter, changes in irrigation practices, and so forth. Predators of earwigs can include ground beetles (which fare well in areas with leaf litter that isn't removed in autumn or winter), spiders, birds, and toads.

Miri