> Easy to apply, Just Peel & Stick according to the Instructions image in listing provided. > Each Decal is 100% detachable and residue glue can be removed easily. The "FnkBiz" K9 Dog Caution Decals material is made to last up to 6 years and can be easily applied to clean smooth surface. Its waterproof and car wash safe. Known for its Quality "FnkBiz" uses a Special Transfer Film on decals that is "Moderately Sticky" which makes application EASIER. This product BEST applies to a clean, smooth surface similar to how you apply a temporary tattoo.