with 3 tiels the mess with food has been bad. vacumeing every morning and sweeping 3 to 4 times a day. So i switched my babies to Nutri Berries. and what a change verry little mess to clean up. Joey & Sally have mastered them well although Gizzy get's a little frustrated and he ends up dropping them on the floor sometimes but he is getting better. anthother thing is they seem to enjoy them.