I had bought a Sandcastle hash company cartridge earlier in the week and as soon as I got it home and tried hitting it, I knew something was wrong. It was not producing any smoke and when it did, it was the slightest amount that tasted like burnt metal. I tried bringing it into the store for a return where one of the guys behind the counter did some sort of demonstration where they blew smoke out of it without hitting it, and basically determined that I was lying to them and that there was nothing they could do. The cart still will not hit. And the employee in the store spoke in an aggressive tone like he was right and I was wrong, horrendous customer service I will not be visiting again after being a loyal customer for years. Again this was the first item I had ever tried returning.