we used to buy chamois off cuts and make our own rat tail mops use wet with a damp scrim that you used to have to boil for about 3 days then leave in the bucket as a sill cloth for about a month then it was good to use on the glass, also used to use a broom head as an adaptor always remember 5 am and as you cleaned the shop front the water would run right up your arm nice especially in the colder months
Martin