How to clean the velcro wrap??

I have been using the homedics velcro wrap for a while. It is getting kinda funky. How do you guys clean them? I was just going to throw it in the washing machine, but the directions say not to get the magnets wet.

You can get the magnets wet. If you have Woolite around, soak it awhile in that plus water, or use any detergent. Rinse thoroughly, then hang to dry.

thanks