Our washing machine descaling and cleaning tablets are carefully formulated with sodium bicarbonate and sodium dodecyl sulfate. Designed specifically for quickly dissolving stubborn dirt and pet hair inside the washing machine, deeply cleaning the crevices of the inner drum, and saying goodbye to the trouble of residual stains. The usage method is extremely convenient: 1. Before use, please make sure there are no clothes or other debris in the washing machine and keep the drum empty. 2. Put a washing machine deodorizing and cleaning tablet into the drum of the washing machine. 3. Select the "Normal" mode of the washing machine or a dedicated "Clean Washing Machine" washing cycle, and start the washing machine to run. 4. After the washing program is completed, use a clean cloth to wipe off any possible minor marks left inside the drum. Then, open the washing machine door and let the inside dry naturally. Moreover, during the cleaning process, it does not damage the internal components of the washing machine, maintains the original performance of the components, extends the service life of the machine, eliminates the source of odors inside the washing machine, inhibits the growth of bacteria, and keeps the inner drum of the washing machine fresh and clean for a long time.