I recently took dd out of the high chair and started letting her eat at the little table with her big brother and guess what - she pretty much stopped throwing food on the floor! of course a lot still falls down... and she still plays with her food... but she loves sitting there and so far she hasn't wandered off during dinner. so, maybe you could try letting your baby eat at a 'real' table and see what happens! or you could just ignore it and wait it out - they do stop throwing stuff eventually. a few sheets of newspaper under the high chair are helpful in minimising mess. good luck!