@baralheia @TechConnectify Finish dishwashing powder says it gets 17 loads from 1.8 kg on the box. 106 grams/load, i.e. enough for >5 tabs. Can't trust 'em!! I use a store brand (Sobey's/Compliments). In testing detergents for my own use, I felt it was the bestest, <$9 for a box (1.7 kg), don't have to use very much, though always throw some in the prewash and never measure anymore, just by feel. I'd say prob a minimum for me would be about ~85 loads per box. Water is soft.