I've only used it on two occasions now, the first was to feed all the seniors of our local High School on there first day back from the summer. I used a name brand batter that you just add water to and it worked very well. the second time I used it, did not start out so great. Batter was not comming out when pressing on the plunger, and it leaked. I ended up dumping the batter into a container and then took it apart and reassembled it. It worked the rest of the morning just as it had that first day. So I probably had something on it a little out of place someplace and reassembling it again corrected that.I don't use it all the time, but it's a great tool to have when you need it. i would certainly buy it again. Its all metal, and not rubber seals to wear out over time. Seems to be a quality unit.