Cat litter boxes can be single-layered or double-layered. This is because certain types of cat litter are not suitable for single-layered litter boxes, while some cats are selective about the type of litter they prefer. To address this issue, double-layered litter boxes were developed. So what are the differences between the two? Let's take a look.
The biggest difference between a double-layer litter box and a single-layer litter box is that the double-layer litter box has an extra drawer at the bottom, which can be used to store cat diapers or other functional litter. When choosing a suitable litter box, the first thing to consider is the type of cat litter you want to use. 
1. Ore sand
Mineral litter, whether coarse or fine, is suitable for single-layer litter boxes. Since using mineral litter generally eliminates the need for additional cat diaper pads, the bottom layer design is largely unnecessary. Unless you plan to switch to a different type of cat litter, a single-layer mineral litter box is sufficient.
2. Crystal Sand
Crystal litter requires a double-layer litter box. The bottom layer should be a cat diaper pad or wood shavings to absorb urine. If crystal litter is used in a single-layer litter box, urine may accumulate at the bottom, leading to a foul odor and bacterial growth. An overly strong smell can cause cats to refuse to use the litter box.
3. Wood sand
For clumping wood litter, a single-layer litter box is sufficient. However, for disintegrating wood litter, a double-layer litter box is recommended, and the usage method is similar to that of crystal litter.
To determine which litter box to use, you first need to find out what type of litter your cat prefers. After selecting the litter, choose a litter box that is suitable for it.
