Raises hand...
I've been advocating washing soda (Sodium Carbonate) for years. It's a very good degreaser and cleaning booster, since it raises the pH. Our grandparents used it on large scale.
It makes up a large portion of Oxiclean, which also contains a larger or smaller percentage of Sodium Percarbonate, depending on the brand and freshness, releasing the extra loosely bound Oxygen atom, to give you Oxygen Power! Not meant to sound tacky or gimmicky.
Warm or hot water works best.
Yes, washing soda works very well for most day to day brewing cleaning where the heavier duty PBW is sheer overkill. PBW contains 70% "Oxiclean" and 30% or Sodium Metasilicate. The last one being a very strong detergent as well as a degreaser.