Lawn ants

[ggstable]

How can I rid my lawn of ants ? I have tried powder and lawn weedkiller to
no avail.They produce mounds of soil which if not swept away prevent grass
growing and leave unsightly bare patches.

[Miranda]

Other than digging up the lawn and pouring boiling water into the nests, there isn't a lot you can do, unless you're willing to use stronger chemicals.

One thing to consider is that if your lawn makes a comfortable home for ants then, even if you kill them all this year, it will make space for another queen to set up a nest. Like many creatures, ants are opportunists and if they find a good spot, they'll live there.

If it was me, I'd stick to brushing the soil to spread it out so you avoid the bare patches. You could also re-seed any bare patches now.