What about Woolite in tap water to wash it in? And yes, I have washed many large items such as a quilt in the bathtub simple because you can see more of it at once, and it spreads out more, not as crunched as i a washer, even a jumbo size tub. I have also dried large items by hanging or draping it over a pick up truck bed. Of course the bed would have to be washed first, and something should be under the quilt like a sheet, but in the summer when the temps are high enough, we have found this to be a quicker way to dry.