Have you used this member before? I have a cess pit, not septic tank can i use this ? I've had a leak from my second floor bathroom off and on for a few months we had two other plumbers out who opened up the ceiling and couldn't find the leak asap came out and in about a half hour found the leak great job. Great professional service very reliable thanks for all your work! Ecozone drain unblocker is an enzyme based treatment for blocked drains it.