
Sodium hydroxide is highly corrosive and should not be used in conjunction with other cleaning agents as hazardous reactions and fumes may occur. I use both eye protection and long cuff chemical resistant gloves and use this product carefully. I like gel dispensing (as opposed to liquid sprays). Given the time and repeated uses, it works quite well, although not a miracle cure for moldy surfaces. Please note that the product should not be used on aluminum windows or shower screens. A US dollar quarter is shown in my photo for size comparison. Thank you for looking at my comments and photos. I sincerely hope that you have found them helpful in considering this product.

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