We guarantee 100% satisfaction with the results obtained from application of Roof-Be-Clean^® as long as you have followed all mixing and application directions as specified on the container labels and you have contacted our customer service department for free consultation regarding your specific situation.  If the customer service department determines that you have applied Roof-Be-Clean^® properly, and the results are not to your satisfaction, we will refund 100% of the purchase price of the product.  Our goal is your complete satisfaction.