I had someone throw greasy pies at some very high level windows.
The 'Tucker' mixer bottle with the detergent tablets wouldn't shift it.
Instead I pumped some TFR up the WFPole, left it 10mins until the glass was nearly dry then rinsed thoroughly until the soapy lather effect has ceased, my brush head was clean again and all the grease was removed from the glass because I had a nice sheeting effect on the glass with no lumpy bumps showing.