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Not exactly sure why you want to apply insecticide, but I will assume it is for bed bugs. I would not recommend this ( 35 years of Entomology experience here ) as it will have little benefit and poses a health risk. I would be more inclined to recommend inspecting your sleeping area as bedbugs...
I make my own soap and body butter that works on repelling mosquitoes and also Is great for preventing blisters. I cannot even use commercial products anymore because they will dry me out.
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