If it is jar soap dispenser, I'm unscrewing the pomp and I'm pouring some liquid soap through the hole to the inside of the jar. But if it is automatic soap dispenser I'm putting the liquid soap into...
Wet a brush and scrub then wipe it off with a towel and repeat! It sucks I am doing it now. I don't understand why people would color walls with it. I have a peach, green, light red and a white layer...
I could not figure this out either, until my know-it-all uncle showed me in about 0.02 seconds. You squeeze both sides from the top to unlock!
As for the soap refill itself, just poke with a paper...