Chewing Plastic + Solution

My guinea pigs chew on everything. Even their plastic pigloo. So I got them a SnakShak toy. YAY! Now they are chewing on something that if they swallow it they can digest it safely. This is defintiely better than plastic. My guinea pigs are reluctant to chew wood so the SnakShak has been my savior.
The SnakShak is made primarily of compressed wood shavings, which guinea pigs tend to nibble on in their cage anyways.