Tomcat® Repellents Rodent Repellent Ready-to-Use is engineered to safely and effectively deter mice and rats from entering homes. Featuring a no stink formula that is long lasting and rain resistant, this easy, ready-to-use formula is tested and proven to prevent rodent entry, nesting and foraging. Through essential oil technology it delivers a smell and taste that rats and mice naturally hate while remaining safe for use around kids and pets, giving you both protection and peace of mind.