But here is how you can save big $$$ on a tubeless system that works.
-Take your wheels and leave the rim strips in them
-Get a tube that is one or two sizes smaller than your wheel
-Inflate the tube just enough to give it shape and stretch it over your rim
-Cut the tube down the middle on the outside (opposite of rim side)
-Fold the flaps of the tube down each side of the rim
-Take your tire and put lots of soapy water along the bead, then mount making sure the tube remains in place (using an air compressor is much easier on this step)
-Inflate to 40psi and make sure the tire bead seats properly all the way around.
-Deflate and add sealant...if using a schrader valve, remove valve core and squeeze sealant through valve. If using a presta valve, you will have to break the bead in one spot (opposite of valve is best) and pour sealant in. Usually 2-4 oz of sealant is sufficient depending on tire size.
-Soap up sidewalls of tires and reinflate. You will see soap bubbles where air is leaking out of the bead and sidewalls. Swish sealant around to those spots until they seal.
-Carefully trim excess tube material from outside the rim leaving about 1/8" exposed (you can go flush if your really careful)
-Reduce pressure to about 30psi and go for a ride around the neigborhood to get sealant all around the inside of your tires.
2Bliss Tire Goo Formula (makes 64oz sealant, twice as much as Stans for the same price...and its better)
-16oz Mold Builder latex
-a 0.7oz tube of glitter
-16oz bottle of Auto Tire Slime (not Slime for bike tubes)
Mix it all together, the latex coats the inside of the tire creating a seal. The glitter and auto slime provide particals to plug holes when you get a puncture. The windshield washer fluid privides a thinner for the latex but evaporates when pushing through a puncture, providing a quicker seal than just water.