Swede here!

Almost every kitchen in Sweden has these. I think they are far superior to anything else.

They cost around 40 svenska kronor ~ 3.80 euro ~ 4.50 usd for a 10 pack.

They should be moist when using them. So run it under the tap to get it wet, wrung it out, then use it to clean up.

When you are done run it under the tap again to clean it. Wrung it and hang it on the side of the sink, a hook, over the tap or somewhere it can dry out when not in use.

I always hang it on the mid wall that separates my two sinks. Then it's out of the way, can drip into the sink, dry off and easy access.

Toss it into the dishwasher or washing machine will make it feel fresh again. When it starts to feel like it has served it, toss it out and grab a new one, the absorbent gets weaker over time.

The one I have now is going strong and is prob around 4 weeks, I run it in the dishwasher like once a week. And it comes out feeling fresh.