Used for about a year. I say this myself, but I'm meticulous and a clean freak. I would wash the grater with a brush immediately after using it to grate daikon radish, and store it only after it was completely dry. There are absolutely no traces of leftover food particles, dirt, or mold. There is no transfer of odors from pickles, air fresheners, etc. There are some chips and scratches on the teeth, but I believe this is just the level of wear and tear that naturally occurs with use. You can still make delicious, fluffy, and crunchy daikon radish with no problems. I recommend it to anyone who wants to try it. I've recently bought a grater that I've wanted for years, a "lifetime" grater, so I'm selling this one. No pets. No tobacco, fabric softener, air fresheners, or moldy smells. [The following is excerpted from the official website] Kamoshika Dougu-ten Daikon Radish Grater Fluffy and crunchy, delicious grating. A daikon radish grater made of ceramic. An indispensable condiment in home cooking, daikon radish. It's a reliable presence that expands your repertoire of dishes, such as serving it with seasonal fish or using it in mizore-ni (daikon radish and broth stew). This "daikon radish grater" is made of ceramic, which doesn't easily transfer heat. The friction heat when grating is less likely to transfer, leaving the texture of the daikon radish, and creating fluffy, crunchy grated radish.