I bet a lot of people in MI do it. You're not allowed to have anything hanging from the mirror while the vehicle is under way. Not even your handicap sign.
For the state of Ohio it says "IMPORTANT, remove before driving vehicle" where you hook it to the mirror post. It's one of those things where they really don't care about in some places but gives enough PC to pull you over and investigate other things you may be doing like possible D.U.I. situation. Your crazy s/o you just walked out on just "snitched" to the cops that you are drunk, got into a verbal altercation and recklessly speed off but you appear to be driving just fine when they follow you. The hanging items and no front tags are good enough to stop you and observe your behavior patterns while trying to detect what appears to be an alcoholic beverage emitting from you. *Don't drink and drive and don't hang things from the mirror.* In some places where it gets hot, hanging items can cause it to fall off the window.
Just a little pointer on the Trees if you guys are using them.... You actually are not supposed to take them completely out of the package. Every week you are supposed to bring them out a little further and they last a lot longer. We have customers at our work that put them under their seats, or some people put them in their lower door holders. I don't know if you guys have ever heard of Wonder Wafers but those air fresheners are specifically designed to go under the seat, and you can buy a huge box of them for 30 bucks and they last a long time.
The car wash here has those but they don't last that long to me or they kept trying to pawn the lemon ones off on me after I said new car. For the trees I do the slowly expose a piece of the time but not as fast as it is marked on the clear window on the back of the jackets they come in. New Car and Leather are the only 2 I like. Black Ice was just not for me.
I just rip open the package and leave in the glove box, as soon as I turn on recirculate I can smell the air freshener. I also have one in the trunk.
Once i got down to the very last but where I took the plastic off, I would put them on top of the cabin air filter inside the dash in My Mazda 6. I didn't do it in the Subaru because you have to take apart the center console to get to the air filter behind the glove box. No wonder dealer charges filter price and 1 hr labor to change it. My car was one of the 1st year productions so I had a filter tray and no filter inside it when I went to change it out the 1st time. I guess the sticker that says this car is equipped with a cabin air freshener and a separate sticker like the oil change reminder date justified why it cost $50
