Do you have a kid who won't clean up after himself? Lisa and I do too. Here's what we did. Every time our 17 year-old son left trash on the counter in the kitchen, we collected it quietly and put it in garbage bags in the garage. We did this over about 6 months. This morning, while his car was parked in the school parking lot, we gave him his trash back - emptying four large trash bags full of trash back into his car:
We also left him a note:
and took this nice selfie:
One of his friends was kind enough to video his reaction at lunchtime. Enjoy. No charge for the parenting tip.