Nope, I have signs posted all over my property expressly forbidding such behavior. As you well know, if you are not told/shown a sign, it's a free for all. So, I took the appropriate steps.
On a slightly different, but still similar note, I was just able to procure 75 bags of mulch from Lowes. The fools just had it sitting out, no signs expressly forbidding that I take it without paying. Once I get it on my property, you can bet your sweet behind, I'll be attaching my "do not take" signs to it though. I am no dummy.