Repaint surfaces that have been painted with oil-based paint. Stickers do not adhere well to surfaces with paint containing Teflon or silicon. Allow the paint to dry and cure for three weeks before attaching stickers.
Clean walls, windows, car bumpers and other hard surfaces with a sponge or soft cloth and hot water mixed with liquid soap. This will remove dirt and grease, which inhibit sticker adhesion. Rinse the surface and wait for it to dry completely before applying the sticker. If placing a sticker on a paper surface, blow away dust or brush it away with a dry, clean cloth.
Place your sticker on a smooth, dry surface that's free of rust, paint bumps, cracks or wrinkles. Apply the sticker in a shady area when the surface and air temperatures are between 66 and 77 degrees Fahrenheit.
Avoid exposing stickers to moisture or direct sunlight.