92 out of 100 Exceptional
Built for the household that cannot afford a haze in the air, and a litter that wears its purpose on its sleeve. Petabite's Snow is built on cassava starch, with a measured dose of baking soda and an enzyme, and it arrives at No. 4 with ninety two on the strength of two perfect fives and a clear sense of who it is for.
Dust is the headline, a flawless five backed by a claimed rate under one tenth of one percent, the cleanest pour we have logged from any plant litter and the reason allergy and asthma homes single it out. Odour is faultless too, the baking soda and enzyme meeting ammonia at the source rather than draping scent across it, the only fragrance a whisper of natural lemon. Sustainability completes the trio of excellence at a perfect five: renewable cassava, a plain cardboard box that recycles with your paper, compostable and flushable in small amounts.
Clumping is strong at four and a half, the cassava setting fast and lifting in one piece, with only the faintest softness keeping it from the top. The single real concession is tracking, marked at three and a half, where the fine, light cassava grain wanders from the box more than a denser pellet would, the one tax this otherwise immaculate litter asks you to pay.
Petabite has done something unusual here: it has built a litter around a single household, the sensitive one, and refused to cut a corner elsewhere to do it. Renewable, beautifully low on dust and odour, it is a litter with a conscience and the performance to back it, and it would sit higher still on a harder floor. A genuinely thoughtful product.