Using these pet tags is super easy. Just thread the collar through the opening on the collar tag. For other tags, you can attach them to your pet's collar with a small clip. When entering text for engraving, keep in mind that the more characters you put on a line or the more lines you have on each side, the smaller the font will be. Currently, we can only engrave English and French characters, so make sure your text is in these languages. To maintain these tags, simply wipe them with a soft, dry cloth regularly. Avoid exposing them to harsh chemicals or excessive moisture to keep them looking great for a long time.