At home, my parents buy big bottles of Tide. In a house that once was home to five, with three of them boy children, a lot of detergent was necessary. My mother always complains that my Dad uses too much Tide. Enter the Tide mini-cap, for conservation:
The cap would only be able to hold one load’s worth of Tide, making it very unlikely for my dad to pour too much. There could also be an installation on the Tide nossles and the cups for powder to encourage it to last longer across the brand line.