good advice on the sprays Mr C, i am a huge fan of neem oil and have been forgetting to use it lately.. I used Eagle20 once on vegging plants and it smelled so bad/chemmy that i will probably never use it again.
i use pyrethrum (Take Down Garden Spray) for mites, do you have any opinion on that?
Mister_D, Green lung, Catfish Billy thank you for the advice and praise.
Green lung, the walls are simply framed with 2"x4" (not to code) with 2" foam insulation board for the walls. Attaching the foam board needs screws with washers, otherwise the screw will go right through the foam board. All gaps were sealed with foil tape. 5 rolls of foil tape were used between construction, HVAC and patching small holes.
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