My very basic little brush just spent 7 hours over two days scrubbing the grouting on my large kitchen floor and all of the stiff nylon bristles are still intact and as strong as when we started! Two thirds of a bottle of Cif with Bleach later, the floor looks like new, 15 years of built-up staining is gone. There are things I would have changed, I would prefer the bristles to come to the very front edge to make it easier to clean right to the wall and the strong little handle could be more ergonomic... however, the width of the rectangle of bristles is just right and it really does do the job. The fact that the bristles do not curve around the end means there is very very little spraying out or splatter as you scrub. My hands are not strong, and the lightweight well angled handle was very manageable. Given the price paid, (with free postage!), this is a truly excellent little brush. I will put a screw-in hook into the cleaning cupboard so I can hang it up - this is not a brush to lose.... Now for the larder, the utility room and the downstairs bathroom......