Removing Mold Stains from Wood is Easy with MiracleMist! Follow These Tips to Success MiracleMist works better on dry wood.MiracleMist works better when used during the cooler part of the day.It doesn’t take much – just apply a thorough application of MiracleMist and watch it work!Take care to avoid getting overspray on plants (a precautionary measure is to pre-wet plants with water prior to application).Rinse when cleaned to your satisfaction. MiracleMist Instant Mold & Mildew Stain RemoverRated 0 out of 5 $12.99 – $24.99 Select options Watch these videos to see what customers are saying about the MiracleMist System.