everything went well, the 3 Teazy tail balls DID have instructions, and they work rather well. They do get under anything that's high enough, and sometimes get stuck. Our elder cat plays occasionally, especially if it seems the ball is teasing him, (that's the intent, right?,) and watches it dart around the room. The 'automatic' setting results in your never really knowing where it went. Until it runs out of power and stays put.