My chickens have mites. I took all of the shavings out of coupe and put DE down everywhere, including perches and nesting boxes. It has been this way for 3 days. Can I put shavings back in the coupe now as long as they are mixed with the DE? They have a dirt bath with DE, ashes, and sand that they will not use in the run. It is dry. I could put this same mixture down where they like to bathe in the run but eventually it will get wet. If it gets wet will it no longer be effective?