Lines under the washtub signify that the garment ... There’s another washing symbol that indicates how to hand-wash clothes: ...

Here's what they actually mean: If the square has one drooping line, this means you can hang your clothes to dry on a washing line outside If the square has three vertical lines in it, you can drip ...

I’ll admit it—I toss my sweaty workout clothes in the hamper with the rest of my laundry and let them sit until wash day. But lately, even after washing, they still smell like sweat.