Your dugout may have blue-green algae, and a livestock intern with Saskatchewan's agriculture ministry has advice on what to do to protect your herd.

Halsey Shaheen recommends producers use a registered copper sulphate product to treat algae-affected water.

But she warns to make sure you calculate the volume in the water body correctly so you're treating with the right amount.

She also warns that when you kill bacteria, they will likely be releasing toxins, so you're going to have to remove your livestock from that water source and find a new one for 14 days.