How to dispose of cat litter:
The advice from the Environment Agency about cat litter suggests that householders should carefully wrap any pet waste and place it in the domestic refuse.
There are now various brands of biodegradable litter available on the market and this may be composted depending on the facilities locally available to you, but faeces should be removed to prevent disease.
Solid items must be wrapped and disposed of via domestic refuse or removed daily and flushed down the toilet, (Unwrapped of course!)
Or visit The Spruce Pets for more: The best way to dispose of cat litter.