Most affordable places to buy in the UK (Image: NC) She uses Elvis Elbow De-Greaser which costs £1 for 500ml and is available at many supermarkets as well as B&M and Home Bargains. The cleaning sensation explained that she sprays it onto the window panes and then leaves it for a few minutes to allow it to work. She then wipes it away with a cloth or sponge to reveal clean window panes, other fans have also done it using a scourer sponge to reach into the crevices of the window. Some fans have even suggested making cuts into a scourer sponge so that it fits perfectly into the window pane, making the results even more impressive.