I tried box detergent because of his dishwasher video, and that's probably saved me hundreds of dollars at this point, with the added benefit of my dishes actually get cleaner.

I also dumped a crappy beverage cooler in my office for a cheap as hell box mini-fridge, which actually maintains temperature enough that I can store cream for coffee and ice down here, and it uses less energy then the unit before.

In the UK the only supermarket I can find that sells powder (after trying lots) is Sainsbury's.

https://www.sainsburys.co.uk/gol-ui/product/sainsburys-conce...

I asked in Tesco and the young lad who worked there (probably 18-19) had never heard of it.

I still dispense it from a Finish powder bottle I've had for more than a decade.

I just cut off a slice of tab (using one of the dirty knives) and throw it in the bottom of the dishwasher before starting it.