I was just wondering this as more often than not my DS leaves a huge mess of crumbs, cheese, bits of crust, blobs of food, veggies etc smeared all over the tray and seat when we are out and he is in a highchair in a cafe / restaurant. I put a muslin round his lap to catch most of it but inevitably food still lands on the floor and gets smeared around. I usually try to pick up the obvious bits of food and wipe the tray but my pal with same age DS says she never does that and leaves the mess behind. What do you do???