[glimmer man]

When using wfp how do you know if you have removed all the fly spots and little marks or dried on bird mess remains if you are stood on the ground doing upstairs.Is it just because it is so good you know it has taken all the spots off . Want to get a back pack for doing some tops but can t work out how you get a spot less clean this way.Please put me right guys.
TONY

[Roy Harding]

Any small spec of dirt or spot will show as the water runs around it and it is quite easy to see.

Roy

[glimmer man]

wow that is good. even thoose really small spots when your cleaning third storey!! you sure you don t get the binoculars out 
TONY