Unless you know the locations and the extent of contamination, it is unlikely you will be able to treat your odor problem effectively. Once located, and properly marked off, you are half way there.

The four basic tools used for urine detection are listed In the order of their effectiveness:

1. Your nose (sniffing can pinpoint contaminants in an Instant)
2. EUS (a sharp tipped, Electronic Urine Sensing device that squeals when encountering urine)
3. UV light (ultraviolet, or black light, that fluoresces the minerals contained in urine)
4. Your eyes (urine on carpeting is not always apparent in full-spectrum daylight)

A complete discussion of these tools, their relative advantages and their shortcomings, can be found in the Manual, "Professional Users Guide."