Going back to the 3rd point on watering, with Ecover products after you’ve finished cleaning the left over water (grey water) can be used directly on your plants, as they biodegrade 100% and are petrochemical free. Just leave the water for a few hours before use for the biodegradation to be complete.
Just thought it was interesting as I wouldn't have thought it was suitable in the past, I might give it a go, but it never stops raining here long enough to water anything.