Some people's mentality.....

What makes one of our neighbors to throw his garbage next to our gate? The owner of the house doesn't live there; the house is rented out to two middle aged men. For the last 2-3 Saturdays a worker does the lawn and other jobs there. Approx 3 weeks ago we noticed some garbage were thrown next to our gate; some pieces of wood, broken tiles etc. We knew it was the neighbor, because the wood pieces were in his entrance 1-2 days earlier. I removed the garbage and threw it outside his gate! After approx one week DH discovered a satellite antenna - the disk - was hidden under some palm leaves we had thrown next to our gate - for the municipality truck to pick up. There were some old water pipes too, and again I threw it on the other side of the road. Today I saw it with my own eyes; the worker came out from the neighbor's gate with the dustbin in his hands - and guess what??? He emptied the garbage at the same place - next to our gate! I was too slow to react, or else I had told him my opinion! Again I picked up the neighbor's garbage; 3 plastic bags with kitchen refuse and some leaves - threw it back! I know for sure it is not the tenants who are so shameless - it's that worker!!! :( What the heck goes on in that guys brain, when he empties the dustbin over on the neighbor's side??? Lack of common sense? Lack of intelligence? Mentality? What was he thought by his parents? How had he reacted if we had thrown our garbage on his plot??? I agree it doesn't look very nice outside our gate nowadays; we have thrown branches and such from our garden for the truck to pick up later on, but - we never throw other things there! Is it that this guy believe it is a dumping place? Even if we have thrown garden refuse there, it doesn't mean it is a dumping area for all the neighbors - does it?! Well, what has to be done now is to get in touch with the owner of the house... He uses to come once a week or so... There are limits for shameless behavior - isn't it?!