I feed it once every two nights.. or once a night.. depends.
I only have one fish that eats it, which is the clown.. and the shrimps. I feed just a tiny pinch.
I feed my fish mysis, and my anemones silversides and cocktail shrimp. The clown and yellow watchman like the shrimp as well... usually feed it every 2-3 days.. sometimes 4
I use Freeze-dried... the clownfish love it... so do the shrimp. I like to keep feeding it as a snack or treat.. or until its time to be fed. It does stink, but it's by no means messy if you're doing things properly the first time

Just breath on your index finger ( get it kind of moist ) and dab it on the stuff... it sticks on, then you just put your finger in the water.... haha no mess.