Vaporizer That Works?

i have 2 vaporizers and no steam coming out of them. whats the problem? i have 2 vaporizers and no steam coming out of them. whats the problem?

I too, have bought 2 vaporizors and neither work. The first, I bought last year and it seemed to pumped out vapors quite well for about 4 uses. (not long enough to warrant the cost, but I had no urgent need so I stuffed it under a bed and forgot about it) then this year, I was in real need for one and bought another, the same kind (b/c it is cheaper than the others offered where I shop). It worked twice with a strong output of vapors and now it too barely puts out anything. I am wasting my money! Are these things just junk? Can I get a refund?? I am very dissatisfied. I too, have bought 2 vaporizors and neither work. The first, I bought last year and it seemed to pumped out vapors quite well for about 4 uses. (not long enough to warrant the cost, but I had no urgent need so I stuffed it under a bed and forgot about it) then this year, I was in real need for one and bought another, the same kind (b/c it is cheaper than the others offered where I shop). It worked twice with a strong output of vapors and now it too barely puts out anything. I am wasting my money! Are these things just junk? Can I get a refund?? I am very dissatisfied.