We use antesli "tablecloths"
under the bottoms of the children who are sitting on step stools. We have a five liter bucket with water in it (at each table) to wash the children.
(Dirty cloth is never in the bucket again) When the children are washed, we have zalo in and wash tables, chairs and anti-slip mats. The anti-slip dries very quickly and is dry for the fruit meal again. Here they hang to dry. We were advised to use this by a physiotherapist. The children sit very steady.