But perhaps that’s a missed opportunity. With manufactured fertiliser still representing one of the biggest costs on many livestock farms, slurry has quietly become one of the farm’s most valuable assets. Every cubic metre contains nutrients you’ve already paid for through feed, forage and livestock production. The challenge isn’t producing more nutrients, it’s making better use of the ones you’ve already got.

That starts with consistency. We’ve all seen it. The first few loads look like weak tea, while the last ones resemble chocolate mousse. Thick crusts, settled solids and hours spent agitating aren’t just frustrating, they’re signs that the nutrients in your slurry probably aren’t being applied consistently either.

So how do you improve it?

Increasingly, the answer lies in biology. Products containing Bacillus bacteria have become popular because they produce enzymes that begin breaking down fibre, protein and starch while slurry is in storage. Over time this helps reduce layering, improve homogeneity and produce a slurry that’s easier to agitate, pump and spread. But here’s something that’s often overlooked. One of the most common questions we hear is:

“Can’t I just throw a sachet in when the store’s nearly full?”

Well... you can. But don’t expect the bacteria to jump into a speedboat and head off to the far corner of the lagoon.

Bacillus are incredibly effective at what they do, but they’re largely carried around by the movement of slurry itself. They don’t actively travel around a 2,000m³ lagoon looking for work.

That’s why regular treatment throughout the housing period makes so much sense.

Each fresh application enters a different part of the store as it fills, giving the bacteria a far better opportunity to become established throughout the slurry rather than trying to work backwards through months of settled material. Instead of playing catch-up at the end of winter, the biology is already there, working on fresh organic matter as it arrives.

The moral of the story? Don’t think of slurry bugs as a winter rescue mission. Think of them as a maintenance programme. Like servicing a tractor, it’s usually easier (and cheaper) to keep everything working well than to wait until something has gone wrong.

By introducing beneficial bacteria throughout the housing period, they have a much better opportunity to become established as the store fills, quietly getting on with breaking down fibre and organic matter long before the agitator gets involved.

And perhaps that’s the biggest lesson from an empty slurry store. It isn’t just showing you how last winter went...

It’s giving you a head start on the next one.