Review on Vikan 38909 Polypropylene Polyester Bristle by Michelle Ocampo

My brush is as good as new after 11 months of intensive use cleaning horse troughs 2-3 times a week. It's as stiff as day one, the bristles don't bend or break, the bristles don't fall out. The only improvement I'd like is stiffer bristles on at least one end to deal effectively (with less repeated rubbing in those areas) with stubborn algae that like to build up in a few corners. I do want to point out that I use a little "elbow grease", which means I'm applying pressure, but since I want the ends of the bristles to do their job, I know it's important not to apply too much pressure exercise. when cleaning on the brush, which would be counterproductive.