Our sink cleaning tablets contain D-limonene, bioenzymes, citric acid. It quickly removes grease stains, thoroughly removes residues and odors, and leaves the sink clean and sanitary. Its use method is very simple: first open the package, take out the cleaning sheet, and then put the cleaning sheet in the sink tube, rinse with running water. Finally wipe the sink clean with a clean towel. After use, it can quickly and easily dissolve grease, garbage, soap dirt, grease, deep cleaning, fast sterilization, and make your sink look new.