the Cide bonds to the fiber and the p-zyme digests the odor as it has live bacteria that eats the odor source (urine) and the waste of the bacteria (enzyme) deodorizes the odor left after it eats the odor source.
We have both and we use the cide for one off odor issues, and the zyme for per urine areas that are repeat as it can keep working even after you have left.