I'm a guy. That means that when I buy a package of underwear, it's usually because I have to immediately discard the ones I'm wearing and put the new pair on, LOL.
I go to a laundromat. No idea what I wash in, but everything gets stuffed into 1 load and set on colors about every 2 weeks. 99% of my clothes are what I wear to work and are very dusty and was very sweaty when they were last worn.