Ibanez IFC1000 Fret Cleaner

They are basically erasers of a different material.
They did a nice job on my guitars but, much like erasers, they leave crumbs and dust in their wake. Which is why they include a brush.

Be careful to not ruin your fretboard and put some tape on it while you polish the frets.

Unsure how long they will last, given how quickly they seem to erode.

it works but it's very tiny, not that easy to handle

it's an easy product that does exactly what you would expect i thought i did not need it but after using it on my oldest guitar and saw how much dirt was coming of the frets. i started to use this regularly. only downside is that it's difficult to clean the whole fret on the higher notes on the guitar. besides that its a wonderful product

If you do not want to damage your fretboard permanently - do not purchase this.

My guitar is 24 y.o. and now has scratches from this product... Complete rubbish