These are essentially heavy-duty stickers. They are incredibly convenient and fast, but they are generally considered temporary. Over time, the adhesive can dry out or peel, so they are best used to get you home.
Not every tube can be saved. Replace the tube instead of patching it if: The hole is on a seam. The damage is at the base of the valve stem. Bicycle Inner Tube Patches
Before you start, you need to know which tool you’re using. These are essentially heavy-duty stickers
If you want a repair that lasts, follow this process for a vulcanizing patch: Bicycle Inner Tube Patches