Set out plates for 1 hour, seal and put in a warm place for 3 to 4 days. Check for mold. Or seal and ship to ImmunoLytics Lab for a full-color report on genus and count. (Lab fees are an additional $130.00 for 4 rooms) Money saving tip: Order 10 extra plates. Set aside 4 to 6 plates for testing again later. Use extra plates to perform a do-it-yourself-test in every area you think may have a problem — your home, office, car, pet, bed, carpet, favorite chair, etc. The more areas you test the better your understanding of your environment and how it may be affecting your health. Grow out the plates and see which areas are the most contaminated. Retest the areas that showed the most contamination with the 4 to 6 saved plates. Send only the retest plates into the ImmunoLytics Lab. Suggested testing areas include: cars, attic, crawl space, office, carpet, beds, favorite chair, etc. Lab fees are additional.