• How long does it take to sanitize a standard grow room?

    • 10,000 sq ft room can take up to 16 man hours

    • This includes setup, fogging, breakdown, and room H2O2 concentrations back to normal permissible exposure limits (PEL)

  • Is H2O2 toxic at any level?

    • Personnel may be in the room with air purifying respirator protection at concentrations greater than 1 part per million (ppm) not to exceed  75 PPM.

    • The PEL limit of 1 ppm is based on irritation data not toxicity data.

  • How do we know the fogging will kill the organism to give us a higher yield?

    • Using our Biological indicators (BIs) placed throughput the facility we can verify that the facility is free of mold, fungus, mildew up to a 6- Log kill

    • We use stainless steel BIs inoculated with 6-Log (more than a million) Geobacillus Stearothermophilus These are a benign relative and accepted simulant to anthrax spores (Bacillus Anthracis).

  • Can you clean between harvests and during the regular grow season?

    • We can sanitize grow rooms in between harvests at a higher concentration H2O2

    • If we are to sanitize in the grow room during harvest, we can adjust the concentration of H2O2 as needed based on pilot program data

  • Do you test for viable contamination?

    • MES can do viable testing through third party labs using standard MES Standard Operating Procedures (SOPs)

    • The client can do their own viable testing pre/post fogging if preferred.

  • How soon after fogging can we use the room?

    • The three factors which impact facility re-entry are 1) Size of a room 2) Amount of H2O2 used in treatment and 3) Facility ventilation system flow.

    • Treated areas are monitored for airborne hydrogen peroxide. Re-entry occurs when levels are below 1 ppm.

    • Best case scenario is to fog over a weekend when personnel not on site and room can get the best dose of fogging

  • What is OMRI Listed mean?

    • The Organic Materials Review Institute (OMRI) is a private, nonprofit organization that determines whether or not a product qualifies as organic under the USDA’s National Organic Program (NOP). Goods that are found to comply are listed on theOMRI Brand Name Products List (BNPL).

For more information or if you have any other questions, feel free to contact us at :


(P) (760)-807-8287



Increase your yield with the Science of Green Cleaning and MES