K.D.
Michelle, I have 25 month old b/g twins. Ignore it! I think they enjoy the reaction from you.
Unfortunately this will not solve your problem fully. Mine still throw things on the floor. It is still cool for them to see the splatters, etc.
I am working on timeouts if they throw things on purpose. But I don't think would work with an 11 month old unless they are really really smart and understand cause and effect.
Good luck!! I KNOW how frustrating it can be to feel like you spend your day constantly cleaning!!!!!
K.