Wave Jet is the first all natural spot and residue eliminator for auto dishwashing machines. Works just like the conventional auto dish washing spot removers, but without the petro chemicals. Comes in a convenient 8-ounce size bottle. Just fill your rinse agent dispenser in your dish washing machine. Refill once per month or as needed. 100% biodegradable. Comes in a number 1 pet bottle.100 percent biodegradable. Refill once per month or as needed. No petro chemicals used. 8-ounce bottle, pack of 12 (total of 96 ounce).