I was really excited for this sourer but it's just not fit for purpose. Long stringy fibres fall off it every single time it's being used. The layers are loosely attached with some sort of glue which had already partly come apart the moment I took it out of the wrapper.
The fibres definitely scrub well and could be the best material to use on tough stains without damaging pans and pots, but it's just constantly falling apart. I'm sure this can work with some revision eg. sewing the layers together or using a much stronger glue but as is it doesn't work at all!