[Willem Fick]

Had to clean up after the fingerprint squad at my house recently. My "incident" happened more than a month ago, and I still discover surfaces with dust every now and then.

Best results came through patience. First use a sponge, warm water and dishwashing liquid to wet the area. Let it stand for a few moments. Now have two buckets ready, one with diswashing liquid/water, the other with clean water. Dip the sponge into the soap mixture, rub vigourously, and rinse out in the bucket of water. Wring out sponge and repeat. Finally take a damp microfibre cloth and use that to remove the last remnants of the powder.