https://bugspray.com/window

Most any window is a direct route of entry for invading pests like Asian Ladybugs, Stink Bugs, Spider Mites, Springtails, Clover Mites, Psocids, Booklice, Ants, Spiders not to mention flying pests.
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This video details how to thoroughly and completely treat any window so you can kill anything nesting there and keep new pests from entering.
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