Ecosorb is NOT a masking agent, but rather a true "Odor Neutralizer". This product is typically added to water and "misted" as near the source of the odor as possible, although there are versions that can be mixed into the substance causing the odor. Such subtances are ashpalt, glue, foundry binders, etc. The only good odor is NO odor. Below are some pictures of Ecosorb being applied . . .