Using this GUTS Hyper Key set is a breeze. First, make sure you have compatible toys to use with the keys. When you start playing, simply press the dedicated buttons on the body of each key to hear the fun dialogue. This adds an extra layer of excitement to your playtime. As for maintenance, keep the keys away from water and extreme temperatures. If they get dirty, you can use a dry cloth to gently wipe them. Be careful not to drop the keys as they might break. Also, store them in a safe place when not in use to prevent any damage.