Regular use of bleach will harm the TPU and elastic on the diapers. It will also break down the natural fibers causing premature wear. We do, however, recommend a bleach wash anytime you are treating a yeast infection or any other bacterial infection. You can also use it to treat some nasty ammonia buildup after you have used the Mighty Bubbles Laundry Treatment to deep clean them first. Make sure to use common sense whenever considering the use of bleach and don't use frequently.
However, if you start to experience an "unclean" smell from your No Prep Soaker Pads (make sure you are always using enough detergent and a full wash cycle) you may add 1/8c of chlorine or oxygen bleach to your wash cycle every 4-6 weeks. Make sure to do an extra rinse after bleaching.