Oh my goodness. I think I had a 'senior moment!!!
I put some washing in the machine and took the two tablets of washing powder to put in the drawer.
I had a bad headache so went back into the kitchen and filled a glass with water and put two soluble painkillers in it.
While waiting for the painkillers to dissolve, I went back out to the washing machine and put the powder tablets in the drawer.
You know what I'm going to say - don't you.
Back in the kitchen I had a glass of thick gunge - I had put the washing powder tablets in the glass!!! The soluble painkillers had gone into the washing machine.
Not the end of the world but I did feel like an idiot.