Easy set-up, ready to use packs start working right away. Hands off, no kill approach means no traps to set and no dead mice to handle. More humane and cleaner than kill products. Organic formula keeps your home, family and pets-free from nasty, toxic poisons. Repellent removes risk of mice dying in your walls and creating a smelly, unsanitary mess that is difficult to remove. Long-lasting protection. Each package contains four 1.5 oz ready to use packs that last up to 60 days. Re-sealable package preserves packs you're not using. Discreet packs can be easily placed out of sight in infested areas of homes, barns, cottages, garages, sheds, campers, boats, RVs, covered trailers and more. The packs emit an odor that is pleasant to people, yet is naturally repelling and irritating to rodents. Mice avoid the area where these odors are present.