Odor emission is reduced due to higher frequency of manure removal. Estimations based on expertise and experience are necessary until more research is conducted to determine odor reductions due to higher frequency of manure removal. Reductions are expressed in terms of reductions compared to long term underfloor storage with no dilution water.

The manure dilution ratio is defined as the amount of recharge water added to the pit divided by the amount of fresh manure produced by the animals during an accumulation cycle. For example, the dilution is 1:1 if three inches of recharge water were added to the pit at the beginning of the cycle and three inches of manure accumulated in the pit during the cycle.