Murky said: I start spraying as soon as it warms up enough, I don't wait until I see the wasps, I don't want them to move in and then have to try and get them to move. And I'd rather not kill even wasps if I don't have to.
If it rains a lot, I'll respray the areas I want to keep them away from, or even if I don't notice a slight peppermint scent anymore I'll respray. Because they seem to like the nooks and crannies of my garbage bins, it makes even those smell nicer in the summer heat, so I don't mind respraying when needed.
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