Review on Enhance Visibility and Safety: Rustark Reflective Tape Sticker Set for Truck Trailer Pickup Mailbox – Waterproof & Self-Adhesive by Larry Blanco

How you apply them and the weather determines how long they last. I attached mine to round wooden posts with screws. Each reflector comes with its own adhesive pad. You simply peel off the outer layer to reveal the adhesive and stick it to any surface. Just be careful as you can only attach it once for best performance.