I need to try some of these, I will go through a bag if 100, 36" pulex in less than a year. Depending on work but if am on regular shop work I will change every other day, 3 monthly job tend to batter them or if working on events,I will change them after a few hours.
I always use both hands, squeegee in right applicator in left, catch the water on way down and squeegee top an front of frames off, tend to catch brick at front of frames or external tile edges so hits rubbers hard.