Gosh, if you were 4 that means you learned how cute without learning how much cleaning comes with it :)
They are worth it, much love comes with the care. More hugs in a day from ducks than in a month from hens :hugs
But also the same ratio for cleaning.
Poor dears... (You and them)
More bedding will help, you can wash them with a very wet dishcloth. I would not give them a bowl of water and let them self wash as they will make you a bigger mess and it sounds like you are at wits end already. (Although I like miss Lydi a's idea of a shallow...