Derwood

I just got home from a 2 week business trip, and have found that about half a dozen ant hills have sprung up in my back yard. While there is no imminent danger in them, they aren't pretty to look at, and the soil that they've been built out of is taller now than the grass.

What's the cleanest/safest way to get rid of them? I have a small dog and a 2 year old who use the yard daily, so I don't want to get into any terribly strong poisons or the like.

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"You can't shoot a country until it becomes a democracy." - Willravel