Different types of cat litter can theoretically be mixed together, but there are a few key points to keep in mind:

Cat litter type compatibility: Choose cat litters with similar clumping properties to mix to avoid cleaning difficulties. For example, bentonite cat litter and tofu cat litter can be mixed because they both have good clumping properties.
Pellet size and shape: The mixed cat litter pellets should be as similar in size and shape as possible to maintain consistency in the litter box and make it easier for the cat to adapt.
Mix thoroughly: When mixing different types of cat litter, it is necessary to ensure that the mixture is thoroughly mixed to provide a consistent user experience.
Cat adaptability: Before mixing new cat litter, observe how well your cat adapts to the new litter to ensure it will not have a negative impact on your cat's health.
Cleaning and maintenance: After using mixed cat litter, the litter box needs to be cleaned regularly to keep it dry and hygienic.