We're sorry to read about your disappointment with Scotts MossEx and appreciate your feedback.
This can happen if the product is applied at the wrong time (ie: moss was not actively growing) or the temperatures were too hot for the product to work. There are two application rates on the package. A regular rate and a heavy rate that should be used for heavy infestations. We recommend applying to damp foliage in order for the product to stick to the moss or grass blades. The more moss that is exposed the better the coverage.
We want you to be confident in our products. For this reason, we offer a product guarantee to our consumers. At your earliest convenience, please reach out to us at 877-220-3089 if we can further assist.