You might be surprised by all the germs lurking in your laundry, but they're there and they're disgusting. While there are plenty of ways to kill germs in laundry, DIY Life points out that antiseptic mouthwash is an effective option you probably already have at home.
All you really need is a cup of mouthwash to do the trick. That's one cup. Your washing machine is a bit bigger than your mouth, so it needs a bit more to work with. Just make sure the mouthwash you choose is 1) antiseptic and 2) doesn't contain artificial colours that will stain your clothing (most won't, but you should test first). Once you've chose your brand, just toss it in with the detergent and your clothing will be bacteria-free.
Antiseptic Mouthwash - Unusual Uses | DIY Life