The short term control experiments showed effective odour and sulfide reduction from the treatment of swine manure with hydrogen peroxide, sodium hypochlorite, chlorine dioxide and potassium permanganate dosed at 500 ppm. The most cost effective one being hydrogen peroxide. Long term control experiments done with dried enzymes, dried bacteria and orthodichlorobenzene did not reduced the odour nor the sulfide.

The rating technique was used in this experiment to evaluate the odour changes with the treatment.