The rubber seal around my dishwasher door is turning gummy in the corners and needs to be replaced. The first thing my repair guy asked was if I use too much bleach. No, I don't use any bleach. I showed him what I was using. We have soft water and I was using the blue and white pucks with a red ball in the center. Apparently, it has bleach in it, is hard on our septic system, and eats the rubber gasket around the dishwasher. It will cost $70-80.00 for the part, plus labour and service call. An expensive lesson. He said to just use the regular crystal or gel dishwasher detergent.