Ideal for dairies, piggeries or any other effluent management system.

Digest-it for Effluent is currently available throughout the UK, NZ and Australia.

Effluent management has become a major concern on Australian farms where animals are confined for any purpose.

Dairy farmers have a legal obligation to contain, manage and dispose of livestock effluent within property boundaries in a manner which prevents the pollution of surface and groundwater.

Digest-it for Effluent addresses these requirements. We have also adapted if for use in other intensive animal management industries and are continuing its development in piggeries.


BioAg identified a problem in the dairy sector with on-farm effluent ponds.

Typically, before treatment, these ponds have thick surface crusts, unpleasant odours, and high solids contents.

Often, annual mechanical de-sludging is required to avoid them becoming unusable for trapping the wastes from dairy pads.

Normally, after a few months of Digest-it for Effluent application, the crust becomes less solid and more liquid becomes available for application to pastures as a rich source of plant-available nutrients, reducing the need for fertiliser.

The digestion aided by Digest-it for Effluent is aerobic and the resultant smell is far less offensive.

Kingshay, the UK’s leading dairy research organisation performed trials on BioAg’s Digest-it for Dairies.


The use of Digest-it for Effluent improves the breakdown of the slurry going to paddock, and the composting of solid matter (including straw), facilitates the flushing out of the slurry under slat floors, improves amenity through odour reduction, and improves animal wellbeing through the reduction of scalding from wet straw bedding.

While the crust on an effluent pond may seem to stop the odour, it can negatively affect the ability of the pond to function.

Trials show that pouring Digest-It into the underflow pits cleans them and the pipes as well.

They flow better and don’t build up with solids.

Piggery staff have commented there is not the ammonia smell in the sheds, or when pulling the plugs to release the effluent, and there is minimal odour coming from the ponds themselves.

A farm using Digest-it in pull plug pits has noticed a change in the effluent held in the pits and, most noticeably, a reduction in the flying insects in the drains. Without the crust on the surface, the available environment for insects to breed is reduced.

A great boon to piggery staff is that Digest-it is “operator safe”.

Operators suffer no ill effects if they happen to splash it on themselves.

No adverse health effects have been shown by pigs where Digest-it has been used.

Pigs can safely play in or eat bedding sprayed with Digest-It.

Using Digest-It in the shelters will enhance the composting process of the soiled bedding.

Using a Digest-it program in a shelter is straight forward and adaptable to the duration of the pigs’ stay.

By using Digest-it in a shelter and continuing after clean out with a good composting program, producers are able to create a valuable fertiliser in a relatively short time.

Related case studies

Read stories from growers who have found success using Digest-it for Effluent. 

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