I now work at home 2-3 days a week, and with a young baby in the house, that can be tough.  This week, I found the solution - a pair of Shure in ear headphones, and some software that plays ambient noises. The headphones are like those noise plugs, you roll them between your fingers, and they form a seal in your inner ear - blocking out sounds. The software, well to quote from their website ( http://www.chatterblocker.com ) ChatterBlocker does not use noise cancellation; instead, it blurs recognizable speech with a soothing blend of nature sounds, music and background chatter.

I had a wonderfully productive afternoon today, blissfully unaware that there were four babies and mums next door! ( I have no affiliation with either company )