I generally just place the slimjims on the driver side window (snugged into the rubber part). That way they can't miss them - as often happens with windshields. I also talk to people in the parking lot as I'm going. You will run into quite a few people getting in or out of their vehicles and I try not to be too intrusive. I simply explain that I'd really appreciate it if they could take a look at him as he is running for president. I've never seen any on the ground when I'm finished so people ARE taking them.