Put the hamster into the running ball on the indoor and outdoor flat floor close the cover and place it on the ground for use. Make sure the hamster is within sight of the owner. If the pet uses it for the first time and cant play. It is recommended that you do not need to worry. You can leave the little pet in the running ball for 1-2 hours let the pet become familiar remember not to be reluctant or it will aggravate the fear. After familiar with the toy the little pet will gradually learn to avoid obstacles when he runs on the ground. Installation method of the covers at both ends of the running ball: The cover is designed with a dark buckle. When the installation is performed the position of the dark buckle of the cover is aligned with the corresponding position of the running ball and the cover needs to be screwed until it is screwed to the head.