Yes and no. You can use bleach on microfiber, PUL or TPU and fleece. These fabrics will not be affected by the occasional, minimal use of bleach, however, we discourage using bleach if it can at all be avoided. It can weaken fibers and is bad for the environment.
If you run into a smelly insert problem that doesn’t seem to be helped by stripping, you can try sunning them, using oxygenated bleach or as a last resort, chlorine bleach.
To use chlorine bleach, add 1/4 cup to the rinse cycle and then continue rinsing until the diapers no longer smell like a swimming pool.
**Bleach cannot be used on natural fibers such as cotton, bamboo or hemp and will compromise the integrity of the waterproof laminate in pocket diaper shells and covers if used repeatedly or in strong concentrations.