I am bang into the extreme natural bristle at the minute, great scrub on it!
Even been doing first cleans with it, its surprising how well it moves muck. I have loads of brushes, they are all redundant now.
Except the tucker dual trim(the beast) which comes out for baked on baddies!
ive had 2 of these brushes and indeed their great for scrubbing.......BUT both mine were knackered after a few weeks,i had to bin em!the bristles clump together leaving them unusable.no way could i untangle them either!a complete waste of money!very poor IMO.
Mine are still going strong after 3 months, you dont have to push so hard mate. I live by the sea in the countryside and I get by fine 6 days per week and my windows get a right mess!
Take some pressure off the pole and let the bristle tips do the work, I dont use hot either you should be fine.
The extreme is such an awesome brush its highly accurate, when cutting in the rinse goes right up to the top of the bristles which means your rinsing right up underneath where you can see your top line of bristles within millimetres. I tried doing this with the ultimate and its useless, the rinse only rises to about an inch under the top bristles.
I can never go to another brush again, the extreme is perfect.