When choosing a diatom mud floor mat, several factors should be considered. Firstly, look at the quality of the diatom mud material. High-quality diatom mud should have a fine and uniform texture, which indicates better processing and performance. Check if it has a smooth surface without obvious cracks or defects. Secondly, assess the water absorption ability. A good diatom mud mat should be able to absorb water quickly and evenly. You can test this by sprinkling a small amount of water on the surface and observing how fast it is absorbed. Thirdly, consider the durability. It should be able to withstand regular use and cleaning without losing its shape or functionality. Examine the edges and corners to see if they are well-made and not easily damaged. Fourthly, pay attention to the size and thickness. Select a size that fits the intended area, and a suitable thickness can provide better comfort and water absorption capacity. Also, check if the mat has any added features such as anti-slip backing, which is very important to prevent accidents. Finally, consider the color and design. Choose a color and pattern that matches the overall decor of the room to enhance the aesthetic appeal.