A little clarity
I decided to invest in a real product to clean my slabs and on the recommendation of the LDLC seller I tried this one.
It makes all the difference, nothing like the wipes you find in supermarkets or even the products for cleaning glasses.
It degreases well, it doesn't leave any traces or odours, you don't need to apply a layer and it's very effective.
I haven't tested other products of the same type but I'm happy with this one.