I've had this for about a year now, I have used it many, many times, works great on carburators. The best part is that it will clean places you can't get to with a brush. Seems to be built well, haven't had any problems. I reuse the solution, I drain it into a container when not in use. One gallon solution lasts a long time. I bought a smaller one as well, it's perfect for the small things.