Not very useful, bad product.
When this mat arrived it was stank of chemicals and had to be kept on the balcony for a long time, it does not collect all the grains, it quickly becomes dirty - on beige it is very noticeable. The main problem is that it is impossible to clean - nohow. Eather it with a vacuum cleaner, by hand, or with soap - it will keep the graines. You can shake it endlessly and it will just keep falling out and you will use a lot of time.
A much more useful mat with a double bo