We use a pure-clay, non-clumping litter for that reason. I hate the chemical smell of the clumping litters. I’ve also heard really great things about wood pellets.

Thank you for this question and this reply, as I have wondered the same thing about testosterone levels and never thought of this part of the issue.

Chipmunks. I once went to a zoo in Chicago with someone who grew up in South Africa and he was more fascinated with the chipmunks running along the paths than with anything else at the zoo.