Ive ordered from Mt Baker alot.I hate steeping an am very impatient. Mostly cuz i run out before i receive more. I just got 6 bottles from Vapewild. Their plastic bottles are the harder type. Anyway to steep faster, I usually war them in a heating pad for about 2 hours a day and shake them. I do this a few days in a row and it seem to work great. However with the vapewild bottles i tried this and something happened. The bottles are made of a harder clear plastic and when I wrapped them in the heating pad two of the bottles had the bottom pop down. In a way that they dont sit flat on the table if you get what I mean. Is this a different type of plastic and unsafe to do Ive had success using this method with other bottles before.