We’ve all been there. You’re rushing to get ready for work or an appointment, look down and realize you’ve got a glob of toothpaste on your favorite blouse. Unfortunately, you can’t just wipe it away ...

Lifehacker reader Joshua accidentally stained his white MacBook with a gel pen and, having just replaced his case, was not eager to see it discolored again. So he reached for that ultra-handy cleaner, ...