I hope that everyone asks JWs if they can give them something in return and carry a Sharpie or pre-printed, permanent labels with QR codes with them. After overcoming JWs objectiosn of not being able to accept religious material, write www.jwfacts.com, www.freedomofmind.com, or some other reputable website or attach labels on the advertising and then hand back the flyers to the JWs.
Worst case is that the JWs will run away and may never bother you again. Best case is that they will not be able to count placing the flyer and may even visit the website.
Peace be with you and everyone, who you love,
Robert
P.S. - If JWs do a drop and run, write the website on the flyer and then paper the local KH's front door with flyers.