Whitewash after red mite treatment?

[traco]

I've been battling red mites in my coop. New build this year, new pullets, virgin ground. Used Elector PSP, proper dosage. Still coming back, so I should treat coop again and 7-10 days from now for new hatchings? Can I do a whitewash treatment inside the coop today also or should I wait?
What does everyone use to eradicate the mites (I live in Canada so some things might not be available to me)? I do not want to use diatomaceous earth.

Thanks.

Barb

 

[Kiki]

Can you buy a Gordon's permethrin products up there?
DE won't help anyways.