Can you wash a cotton belt in the washing machine?

I handwashed it and it's hard to get the detergent out..Can you wash a cotton belt in the washing machine?
I always machine wash them and machine dry them, too. To iron them place the rounded type under the iron and hold the iron still. then pull the belt down from the botton. You can iron the flat belts this way too, or iron it in sectioms as if you are ironing a pillowcase.Can you wash a cotton belt in the washing machine?
Yes you can but use cold water and the gentle cycle. I would also use woolight.