i have had a grs ic on my car for a while now , but have never cleaned it , is it worth cleaning ? i dont want to take off the protective layer , once its polished im guessing it will become a weekly chore??

i just got a strutt brace from a freind and so i went and got some meguiars metal 'polysh' it claims to be able to protect as well, so guys does anyone clean their ic , and if so with what ?