--- --- Oct 30, 2024 # Sustaining Cat Health by [Jeff Wilser](https://time.com/author/jeff-wilser/) ## Jeff Wilser  Cats can be stoical, hiding their health problems until it gets serious. But their urine can provide clues: When your cat goes in the Smart Box Health Monitoring Cat Litter, the pellets will change color as a warning sign that something’s wrong, such as a urinary tract infection or kidney problem. Other color-changing litter uses silica crystal to achieve health-monitoring—essentially plastic that gets dumped in landfills—but the Smart Box litter is fully biodegradable, says Alistair King, co-founder of Rhodes Pet Science, who calls the litter "health monitoring in a natural format.” **Buy Now:** Smart Box Health Monitoring Cat Litter on [Walmart](https://fave.co/3YBxmty) These are independent reviews of the products mentioned, but TIME receives a commission when purchases are made through affiliate links at no additional cost to the purchaser. Smart Box Health Monitoring Cat Litter: the 200 Best Inventions of 2024 ```json [{"@context":"https://schema.org","@type":"Article","@id":"https://time.com/collections/best-inventions-2024/7094676/smart-box-health-monitoring-cat-litter/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/collections/best-inventions-2024/7094676/smart-box-health-monitoring-cat-litter/"},"headline":"Smart Box Health Monitoring Cat Litter: the 200 Best Inventions of 2024","datePublished":"2024-10-30T11:52:11.000Z","dateModified":"2026-04-13T11:54:28.783Z","description":"Find out why Smart Box Health Monitoring Cat Litter is one of the best inventions of 2024","url":"https://time.com/collections/best-inventions-2024/7094676/smart-box-health-monitoring-cat-litter/","keywords":["Tech","E-Commerce","list","franchise","Magazine","best inventions"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltf8fa31c8ea9bf506/698a8a13929fad7925c019f1/Smart-Box-Health-Monitoring-Cat-Litter.jpeg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Jeff Wilser","jobTitle":null,"url":"https://time.com/author/jeff-wilser/"}],"creator":"Jeff Wilser","articleSection":"Business","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltf8fa31c8ea9bf506/698a8a13929fad7925c019f1/Smart-Box-Health-Monitoring-Cat-Litter.jpeg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/business/","name":"Business"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/time-section-tech/","name":"Tech"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/collections/best-inventions-2024/7094676/smart-box-health-monitoring-cat-litter/","name":"Smart Box Health Monitoring Cat Litter: the 200 Best Inventions of 2024"}}]}] ```