Natural rubber is used extensively in many applications and products, either alone or in combination with other materials. In most of its useful forms, it has a large stretch ratio and high resilience and is extremely waterproof. (source)

Can guinea pigs eat rubber?

As a food obviously no, but if they happen to nibble it they will be fine. They are more likely to try and chew it to grind their teeth on it if they find it in their cage.

However, it is not the most satisfying material for them to grind their teeth on and they would prefer something more solid such as wood or chewing and eating hay.

For more things that guinea pigs can and can’t eat, check out our guinea pig food list.