Some hamsters have a tendency to chew in their cage/ accessories if they are not provided with other alternatives such as a chew toy. That's why Habitrail® has developed an interactive cardboard maze that allows your hamster to hunt for his food and treats. Hide your food or treats inside the cardboard maze, and your hamster will have hours of foraging fun chewing away at the maze in search of them. It helps to satisfy your hamster's natural chewing instinct, while providing exercise and may help to alleviate boredom.
Your hamster is gnawing on the cage out of a desire to have something hard to chew on. Hamsters have to chew, lest their teeth grow too long (and they starve as a result) or their teeth grow too weak (again, they starve). You may wish to review the types of chew treats you offer to ensure they are things your pet likes. There are all types of products on the market, we offer a hard compress of nutrients called NutriBlock – Living World Extruded, and things in your fridge like raw carrots. Feel free to experiment to see what your pet likes best. Another possibility is that your pet is bored and is releasing this anxiety. Take your hamster out of the Habitrail® unit for regular play periods. Let it loose on the floor or even in the family bathtub (a good safe place for it to run around). Do not let your hamster chew on its living environment. You may want to paste the area it is chewing on with a slice of lemon to stop it from continuing. Also look for commercially available chew toys like wood chews.