Instead of buying a small bottle of a spendy rinse agent at about $4 for your automatic dishwasher try this inexpensive and non-toxic substitute - White Vinegar.
Weighing in for a gallon of this safer home cleaning standard at under $4, who would choose the other product.
Simply fill your rinse agent dispenser with white vinegar and it will be released automatically in the rinse cycle every time your dishwasher runs.
You can do the same for your laundry by adding one-half cup white vinegar to the rinse water and reduce or eliminate fabric softener. It will also remove more soap residue from your clothes, making them whiter or brighter.
NOTE: Jet Dry contains citric acid and sulfamic acid (descaling agents) and both compounds can cause burning if ingested. Keep both liquid and powder forms where children can find them.