I run dirt cheep tires from the likes of walmart with it tires thoroughly breaded with Goat Stickers Hence where my user name came from. Pre-slimed tubes will never work there is simply not enough product in the tube this is what I am trying to say. In essence what is happening here is anyone and there uncle that tries a pre-slimed tube will go off crying it did not work.
They will not work here ether and never will. It is a useless concept to me. Then what happens is the part of denial trying to patch one that simply needed to have enough product in it to do the job. There is a huge difference in a lightly coated tube and a active working puddle. Pre-slimed tubes do not match this criteria.
The day when tubes come with up to 7 ounces of product in them [ pre-slimed] will never has never happened thus forth folks giving bad reviews. I assure you it works great for me this way on dirt cheap tires and heavy duty tubes. It will only work this way to. To the tune of stopping punctures by nails and yes permanently that of course do not reach the rim.
The way the stuff works is by actively having enough in the tube to have moving activity during riding. If you park a bike for weeks or months it will loose air pressure if you ride it it simply does not loose air pressure.
The worst thing I have seen happen here is the nonchalant belief that a pre-slimed tube works they do not work and never ever will in my opinion. I thought to explain why is all and share my experience. The way I use it is the only way anyone will ever achieve any good results IMO.
It is funny that the stuff is green they should simply make it clear like water perhaps so no one will be able to say they saw any thing green. I never had any luck with tires liners they pinch tubes in my opinion and ruin ride quality. I just will not use them. Paper thin tubes have been deemed truly useless to me for everything except for an emergency road side tube in all my travels in which case I will usually have a severely tore up tire.
So I solemnly say it works flawlessly for me this way and yes truly even on cheaper generic Wallmart tires but only with enough product and only on thick tubes. I will say it again I absolutely do not use patch kits ever at all what so ever.
Experience with a minimalistic pre-slimed tube will always produce a bad review IMHO.
YouTube - Slime Tube pucture Demo 002.AVI