All of my kids are in boosters including my 4 year old son. he sits at the table with the booster as I find he can't seem to sit still and sit properly when he is on a normal chair and I use the threat of buckling him in to keep him sitting properly. The others, including the 3 year old, are in booster seats with trays...it is ever so much easier to clean up as less food falls on the floor and I just take the whole trays off and wash them in the sink. I used to have them all at the table and the cleanup was so much harder.