Do I need a pre-spring treatment?

There are quite a few ways insects survive winter, the first way is by migration. The Monarch Butterfly is the most common example of this maneuver. Many insects successfully survive winter as immature larva. Insects may also seek shelter under leaf litter or similar shelters to keep them warm, while others use glycerol to replace the water in their bodies to a liquid which acts as an antifreeze. Other insects simply bury themselves deeper in soil to escape the cold. Many Insects also overwinter as eggs, some species of mosquitoes can survive years in this form. Many wasps seek shelter in eaves and attics of houses and barns. How can I avoid the overwhelmingness of insects returning in spring?

Savi offers a pre-spring treatment that will help control these pests in the springtime. Our pet friendly chemicals are made to bury themselves in the soil to make sure these insects don’t return in alarming numbers. Doing things like making sure all leaf litter and other things laying around your home will also prevent pests from taking shelter too close to you. Rock and mulch areas will need to be treated as these tend to stay warmer, allowing pests to stay active during these cold temperatures.

https://www.si.edu/spotlight/buginfo/winter