Septic Maxx Solu-Pacs are commercial-grade and chemical-free. They contain both aerobic and anaerobic ingredients and activate in low-oxygen environments like septic tanks and higher-oxygen environments like drainfields or holding tanks. Like a probiotic, they can replenish the body of the septic system with the healthy bacteria it needs to function at its best and help liquefy solids, toilet paper, greases, oils and starches. They can also help replace the good bacteria that get killed off by the bleaches, detergents and other chemicals used to kill the bad bacteria. Use them once a month to protect between pumpouts and reduce the chance of drainfield failure. Simply toss the pre-measured packet into the commode, wait 5 minutes, and flush. They are available to contractors looking to resell to their customers and for private purchase. 800-397-2384; www.septicmaxx.com.