I love a clean home. But I have five young children and two dogs, and, well, stuff happens. That’s why I’m completely obsessed with finding the best vacuums, carpet cleaners and pet stain removers.

At first glance, it’s easy to dismiss the creation of custom bath soaps as far outside the usual Hackaday subject matter, and we fully expect a torrent of “not a hack” derision in the comments. But to ...