Tom, thanks for the speedy response. I tried cleaning carts a while ago, but you've motivated me to try it again. This time I'm going to be more patient and let the thing sit on the soaked pad with the carts for a day or so.
Can I ask, where did you get your formula for the cleaning solution? I've seen quite a few and am curious to know where you got yours. I've been using a 50/50 mixture of distilled water with Windex. I've also seen people mixing some ammonia with distilled water. Alcohol is a new one for me.