The DS3 product is a square dry "swatch" that when water is added, foams and lathers to tackle specific tasks in different ways; the Throne Foam Toilet Cleaner, for example, is designed to be dropped in the toilet overnight, while to wash one's hands, water added to the swatch transforms into a foam.
Judging by the looks I get when I have attended such premises it would appear that it is not a manly thing to wash one's hands, or maybe, quote "my germs never bother me so therefore they can't hurt anyone else".
16 sec.) offers a similarly compact, no-nonsense source of invaluable information for young women, and "Wash Those Hands!" (9781559426343, 10 min.) stresses why it is critically important to personal and societal health to wash one's hands properly and regularly.