I have sprayed my place for bed bugs. I now want something else to help control this issue as I believe they might be becoming immune to what I am spraying. I am getting some DE today. Will this interfere with the spray I put down and not contact them? What order is best, DE first, then spray, or spray then DE or does it not really matter? I know it is not good to use too much DE, but enough that it will affect them if walked over. Thanks.
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