2. Washing sweat caps
If you look at the tags on your baseball caps, the manufacturer recommends sticking them in the washing machine. The problem is that the agitator can be far too aggressive for the cap’s brim. So, if you want to remove years of sweat from your caps, just toss them in the dishwasher. You can use soap if you want, but you might need to run multiple rinse cycles to get it out of the fabric.