Our washing machine decontamination effervescent tablets contain sodium bicarbonate and citric acid. It dissolves quickly, leaves no residue and protects the washing machine. The way to use it is simple: empty the water in the washing machine, no need to disassemble the washing machine, add washing machine cleaning tablets, and start a full washing cycle. After the washing process is complete, the bottom tank of the washing machine can be cleaned. It is suitable for everyday household use and can also deal with serious stain challenges.