Wow, Jeb from Mega-Steam emailed me after reading my post about the rubber in the eye dropper. He offered to replace the damaged eye droppers, which was really nice. He also provided me this advice that I thought I would share.....
We have found that if the user squeezes the fluid out of the glass pipette before storing the rubber will last a longer time. A lot of guys just put the fluid away and never think of emptying the eye dropper. We have looked into synthetic rubber, but have found that it too will react over time with the smoke fluid.
Thanks Jeb, no kidding I do think Mega-Steam is the best smoke fluid out there and no doubt you customer service is even better! Thank you very much.