Wow MX, sorry but you really need to do more homework on the care and training for Macaws.
Let me guess here, you do not use a spray bottle to bath your Macaw, Your macaw test you a lot to see what they can get away with, sometimes have bad bouts of screams, more independant and not a complete cuddle bug.
Using spray bottles, news papers to beat a dog, screaming or yelling at a bird, what are you really gaining here other then scaring the crap out of the animal.
Do you know that when Macaws are scared or do not understand how to act around a person, they normally will end up feather plucking and completely stress out and could start to harm themselves.
You should come to my home to see how my two boys interact with eachother and to see how they are trained.
Before anyone purchase a Macaw, the first thing the buyer should ask themselves is, do I have enough time for this animal, if the answer is anything less then no, do not buys this animal.
Macaws thrive on attn, they have to be part of the family, they have to be where all the action is, they need special training on how to co-exist with their flock meaning you without the fear of a spray bottle.
To correct Macaw behavior is so easy to do. Ignore the bad behavior and reinforse the good behavior, this means, if you want a quiet Macaw, give them treats when they are quiet, if you want a Macaw that does not bite you, give them trats when they are not trying to bite you, if you want a Macaw who enjoys showers, give them a treat when spraying them or after taking a shower in the bathroom.
you have to remember that Macaws are like 4 year old children and do learn so never under estimate the Macaw when it comes to learning, Challege them, teach them tricks, solve puzzels, hide their food inside their cage, make games with them when handling them, this is all training and teaches the Macaw how to interact with you. you will soon see that they want to please you and not be yelled at or sprayed.
I do not want this to come across to you to put you down or anything, i hope this helps you with your Macaw or issues you may have, i don't want the readers here to get the wrong idea from you and think it's okay to use spray bottles because it is not okay. best of luck to you Joe