One pack of Odor Injector
Urine infiltrates deeply into absorbent materials. As it dries, the water evaporates leaving behind an Aggregate of organic and other components that soon crystallizes forming a multitude of "salts." In effect, the dried salts form a barrier to any liquid you may later try to introduce. Unless you are able to gain access to contaminated fabrics from both sides; the most positive, effective way to treat dried urine is by injecting directly into the contaminants with a high-quality bacterial/enzyme digester.