Purchased two years ago, six bags remaining. The scent of peppermint was still strong when I opened the bag. I put it in a zip-lock bag after using half of it two years ago and left it as is. For those who want to try it out, please do. ☆彡Free Shipping☆彡 Comolife Cat Repellent, Just Place It - Guard (15g x 6 bags) Effective for about 1 month, Cat Repellent, Deodorizing, Individually Wrapped, Peppermint Scent, Rain Resistant Just place it where cats appear! Individually wrapped, making setup and disposal easy. Double effect of repellency and deodorization, rain resistant, and long-lasting effect. Keeps cats away with the scent of peppermint that cats dislike. For those who have had their flowerbeds ruined by stray cats, or are bothered by the smell of their feces and urine. Lasts for about 1 month. (Varies depending on the installation location, weather, and season) Specifications / 15g x 6 bags Size / 10.5 x 7 x 1cm Weight / 15g Materials / Granules: Pumice stone, acrylic emulsion resin, Repellent: Peppermint, methyl salicylate Made in Japan