Before using the GreenGobbler, we would test safety showers with a 5 gallon bucket and a shower curtain. It was time-consuming, physically exhausting, and gave the person doing the testing a not so pleasant shower most of the time. In using the GreenGobbler, we were able to test an entire research building full of safety showers much more quickly than we could before and with much less of a mess/slip hazard created. The eyewash testing attachments also came in very handy for testing our combo units. Since some of our research buildings are rather old, we have some shower heads that are pretty high up. The extender tube allowed us to easily reach those shower heads to test them with very little mess created. The built-in thermometer was very easy to read and for the first time allows us to really measure shower temperature. The tank lets you test several showers in a row without emptying, and the built-in pump makes empty the tank quick and easy. My only recommendation for an improvement would be to perhaps increase the size of the outlet valve provided if electricity is not available; I had one building where finding a place to dump the water with an outlet couldn’t be found, and it took almost 20 minutes to drain the tank through the spigot.