Can I leave Pallets there?

I noticed this sign on the loading dock of 3 Bethesda Metro Center Plaza. "Notice. No Trash, No Pallats. Violators will be charged" Is it ok if I leave pallets there? Does anyone proofread signs anymore? How long has it been there? If managment notices, will they replace the sign or just leave it?

Here's another sign on on the same loading dock. It starts "NO PARKING IN LOADIING DOCK. For Unloading Only". What's this, A loading dock where you can't load? Why don't they just call it an unloading dock. And, what if you need to load something, where do you do that? To be fair, there is yet another sign on the loading dock that says you can use it for both loading and unloading.

[where: 3 Bethesda Metro Center, Bethesda, MD]