Ultra Powrpaks offer a concentrated non-formaldehyde powder toilet treatment in a convenient quick dissolve packet. The time-released odor control formula in Ultra PowrPaks provides continual coverage in all types of holding tanks. One packet is all you need per service. No mixing, no measuring, no spills, NO MESS!! Ultra PowrPaks are packaged in easy-to-handle airtight pails. Fragrances available: Rasberry-Vanilla and Fresh-N-Clean. Packaging 1/4 case, 3 pails, 156 packets; 1/2 case, 6 pails, 312 packets and 1 case, 8 pails, 416 packets. Biodegradable and environmentally safe.