Although this product doesn't last as long as it boasts and is expensive, I definately noticed an immediate difference in my cats the same day I started using these. It stopped them from urine marking completely. And just as it warns, when you stop using them, your cats start marking again!! Mine started back up within a week! If you love your cats, this is well worth the investment. Also, the spray works great (But don't spray it around children & don't breathe the vapors. They can really choke you up!!).
Guide created: 07/11/07 (updated 08/16/08)

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