Cat Urine Smell

im using “urine off” but apparently people say it works better if you cover it with plastic.as in spray the area and cover with plastics.my question is:what kind of plastic?like clingwrap or a plastic box??please help.even if u havnt done it before what wud ur interpreteation of “plastic” be

thanks

Clingwrap, I think the reason they say to cover it is to keep the product from evaporating. A box would allow it to evaporate. hope this helps.