Place the unwrapped tablet in the main dishwasher detergent dispenser and close it. This is extremely important: use only one tablet. No matter how dirty your dishes are using more than one tablet will not make them “cleaner” but will instead probably flood your dishwasher and kitchen.Click to see full answer. Keeping this in view, can you put dishwasher tablets in the bottom?(After it flips out of the automatic dispenser on the door, the dishwasher tablet falls into the bottom of the machine and dissolves in the hot water there. If your dispenser stops working, you can usually put the tablet in the bottom of the machine instead.)Also, do you have to put dishwasher tablet in dispenser? Single dose detergent packs should be placed in the dispenser. Tossing one into the bottom of the dishwasher will cause it to dissolve too quickly during the prewash, leaving no detergent for the main wash portion of the cycle. Additionally, what can you use instead of a tablet in a dishwasher? DIY Dishwasher Detergent Tablets 1 cup washing soda. 1 cup kosher salt. 1 cup baking soda. 3/4 cup lemon juice. Silicone candy molds or Ice trays. Airtight plastic container. Why does dishwasher tablet not dissolve?One of the causes, why your dishwasher tablet is not dissolving, is that the water is not hot enough. The normal water temperature for dishwasher tablets to dissolve is 120-160ºF. This way you can tell if the water isn’t getting hot enough to dissolve the tablet.