I would guess that creating resistance would occur through successive use through multiple generations of whatever pest one is dealing with?Best not to, can create resistance.
Using permethrin, which I understand to be a broad spectrum pesticide, once per year to clear out any insect populations should not create this circumstance?
I am very far from being an expert and do not want to reduce the effectiveness of permethrin or any other pesticide I might choose to use.
Can anyone provide clarity here or point to some authoritive source of reference.
Thanks