Thanks for the replies, I will be dammed if anyone will use my toys anymore. It is amazing how many people i know are anal as hell about their own toys but have absolutely no respect for anyone elses property.
Anyways, I did some research on the subject and came across the following post I copied from gd.com:
this is my favorite tire sealer method; and I've used it since 1996 with 100% great results. No leaks, no clumping after prolonged storage, no rim corrosion, washes out with water, and REALLY CHEAP!
(PER PADDLE)-- 1- 8oz bottle of Liquid Alumaseal Radiator Stop Leak, mixed with 15 ounces of regular Anti-Freeze (non- Dex),.. I use Peak brand.
You have to stir the Alumaseal with a screwdriver to get the stuff in the bottom of the bottle blended with the liquid. Then pour it into an old gear oil bottle along with the Anti-freeze, and use the gear oil spout tip with 6" of vinyl tubing to connect to your valve stem (core removed), then squeeze the bottle 'till empty. You HAVE to shake the bottle alot to keep the stop leak in suspension. Drive the car a mile or so and you're done.
I split 1 bottle between the 2 front tires.
My car will sit all summer, and the tires NEVER go flat!