Hey y'all, I've been vaping (and cig free) going on two weeks, and after reading this thread, I ran out and bought the blue foam from a local pet store. TONS MORE VAPE then the poly, I rinsed it for 5 minutes or so, and cut it to size, had a hard time getting it into the cart, but I used something to help it slide in there. Loving it so far. My wife thinks I've gone nuts with the whole VAPE thing, and is tired of hearing about it. She is going to try to quit smoking when we get our next order of liquid, I bought her 24 mg nic strength to get off of the smokes, my 16 wasn't cutting it for her. He'll sometimes it doesn't cut it for me either. It is too easy to go nuts with this stuff, in the 10 days I've been vaping, I'm already on my third pv. Started with a 510, but I was changing batteries every 15-20 minutes, and carts in between that, so I then bought a 510 mega, the batteries on those are better. I am changing them out 4 times a day, plus the carts are twice the size of the normal 510's, but then yeaterday I ordered a t-Rex from esmokeronline (I've bought everything from them so far and am very happy), so I'm progressively getting worse, then I saw my yoga teachers pv, he'll hers looks like a MAGLITE, I had no idea there were so many choices out there. I spent 60 on the 510 mega, and I don't have the problem with having to fill those carts up too often, they last for a few hours, and don't leak too much if I don't overfill them. Good luck finding the right solution for you.