It can be used in conjunction with commercially available detergents.
However, chlorine-based detergents cannot be used together.
Also, if you use regular soap detergent, black mold will grow in the washing tub due to its nature, but Rinenna has a strong ability to remove dirt, so it will also remove dirt from the washing tub and prevent it from getting on your clothes. It's rare.
If you are using a soap-based detergent, we recommend that you first clean the washing tub before using it. 
