I've just noticed DP's computer room is riddled with ants. From what i can tell there isnt a food source of any sort so thinking maybe the rain has brought them in..

I don't like using chemicals around the children, particularly sprays that can get into their lungs.

What's a safe way to get rid of them?

Now ill really be telling him to spray outside the house again, we are just filling up with insects and spiders!