I've been using Summer's Eve wipes. They are sensitive enough for your lady parts and are made to keep you clean and fresh down there, so I figure they are good enough for my toys (though I do wash with soap and water as well). I can't use any of the wipes sold on this site, they all contain aloe and I am allergic to aloe.
Oh well, I'll stick to my Summer's Eve. They're cheaper anyway and I can get them at the grocery store or walmart.