Keep little critters happy and busy by providing interest in their enclosure. Made in the USA and safe to chew, completely nontoxic. Not only do these habitat enhancers help prevent bar/cage chewing, but they will also help keep their teeth from becoming too long.The mini obstacle course is sure to provide hours of fun for pets. This fun shape allows small animals to Nibble, Climb & Hide throughout the different size holes, the perfect place for small critters (animals) to hide out or burrow under.