Polite ways to say "No junk mail"

[quixote73]

I'd like to know of a polite way to say that I don't want people putting junk mail, free newspapers, etc. through the mail slot in my door. I get a ton of these.

Also, while I'm at it, I'd like to know a polite way to say, "Please don't put lean your bicycle on the A/C unit or put things on top of it". My A/C unit is near the bike rack of my apartment, and invariably bicycles get leaned against it, leaving rubber marks and scratches, or someone throws their bicycle cover on it.

Thanks in advance for your help!

[blimp]

チラシ・広告を入れないで下さい

I am one of the few, or rather the only one in my building with one of these signs posted to my post box. It works sort of, I still get the occasional advert but less than I got before.

[blimp]

i thought someone else would fill in the rest but i reckon not.

エアコンに自転車を立て掛けたり、上に物を置かないで ください。

[ponkikki]

Originally Posted by blimp

i thought someone else would fill in the rest but i reckon not.

エアコンに自転車を立て掛けたり、上に物を置かないで ください。

I think this is natural and perfect.
If the OP wants it to be as polite as possible, you can add “お願い” at the biginning of the sentence.

お願い：
エアコンに自転車を立て掛けたり、上に物を置かないで ください。

“お願い” means “ATTENTION !” on translation, but the nuance of it would be a sort of “I have a faver to ask ”. And this would sound a little bit softer than without it when toward the neighbors , I think.