Roebic K-37-Q-C1500-4 32-Ounce Septic Tank Treatment Concentrate
A concentrated easy to use K-37 contains patented ROETECH bacteria that keeps your septic system running smoothly.  Prevents the clogging of inlet and outlets that can lead to unpleasant odors and overflowing receptacles. K-37 works in both your septic tank and drain fields.  Economical and safe for all plumbing.