DeTour Gel For Rats, previously known as DeTour For Rodents and Insects, is a professional grade barrier sealant with superior viscosity. It has outstanding durability and adhesion through penetration to seal out everything. It is waterproof, easy to clean up, and crack proof. It has been approved by NSF as safe, effective, and food safety in restaurants, food storage, food processing, and food preparation areas. Detour is created as an all-weather formula, it won't melt or freeze in different climates and will continue to retain its viscosity. It is 100% non-toxic and will not create any toxic problems for plants and animals. It is long-lasting and durable for up to one year outdoors and 3 years indoors when applied on non-porous surfaces. Apply along walls, runways, vent screens, A/C ducts, holes in walls, holes in sidings, floor drains, doorways, and grease traps. This product comes in a 10 oz tube.