Non-Recyclable

You can not recycle plastic litter boxes in the majority of cases. They are usually made of PP (#5) plastic, a resin type rarely recycled through curbside programs. Additionally, litter boxes represent a health hazard for municipal workers and a contamination source for the recycling process.
Please note: Recycling guidelines may vary depending on local regulations and facilities. The information provided here is intended as a general guide and may not apply to your specific location or item. Always check with your local recycling center or municipal authority for the most accurate and up-to-date recycling information in your area.
Typical RIC Symbols Used

While #5 Polypropylene is technically recyclable, it is rarely processed. Its recycling rate is barely touching 1%. This resin is used in the production of litter boxes, and the symbol is usually located at the bottom of the box.
Where To Recycle
Use Recycling Locators: Locate specialized recycling programs near you using RecycleNation & Earth911 (US) or RecycleNow (UK). Search based on the RIC symbol and not the item name. If you find a location that does accept them, contact them before dropping it off. They may not be able to process litter boxes due to the health hazard associated with them.
Ways To Reduce Plastic Waste

Disposable litter box trays are the best way to reduce your waste footprint. Instead of using a single big plastic box that will eventually end up in a landfill, you can purchase plant-based biodegradable paper litter pans. They are ideal mainly for small pets.