1. Quit charging Fees for non commercial items being discarded. Or at least don't raise the Fees. When you, do the illegal dumping increases dramatically.
2. Law or not you very rarely Catch offenders,and you waste a lot of $ trying.
3. The Cost of going around cleaning up the illegal dumps are far more than the Fees raised at the Legal Dump Site.
4. You can be Stubborn and continue trying to enforce or you can do the Math and fix the Problem. Whether you like it or not @#$$@# happens. Live with it or follow 1-3 above. That has worked everywhere it has been used.