How do we lessen septic reservoir odor? what philippine products can be used?

what philippine products can be used?
Chimney sweep?
Answers:    i'm not sure of the availability in the phillipines, but here are a few companies that produce an enzyme to break down septic contents. They are available through RV specialty retailers here inthe states. We used one on our summer camp latrine a few years ago, and it help with the odor.
Water furnace dumping too much river?
How are you getting odor from a septic container. In the US tanks are hermetic and all the toilets and basin have hose filled traps. The solitary way to smell a septic container would be the vent stack and that rarely happen. Now if it is an open reservoir or field the lone way to block the odor(if it doesn't smell it not decomposing)is to coat it. In open out pit toilets here we us a deodorant oil base product. The oil covers the surface to block most of the smell and the deodorant to build it smell good.