<|begin_of_text|><|begin_of_text|><|begin_of_text|>seeing a model of the Homebiogas device on display at the June 26-27 Cleantech Israel 2018 conference and exposition in Tel Aviv, I paid a July 10 visit to the company’s headquarters in Beit Yan<wm>uach, in northern Israel and my first glimpse of the full-sized Home Biogas system was a surprise. All the pictures on display depicted the device as a relatively simple and straightforward mechanical system, and as the story goes it is a relatively simple and reliable method for making biogas in large quantities. However, a talk by Michael Kiefer, director of the company, explained that his team discovered that on low-cost or homemade devices, the bacteria can be much more active at room temperature</wm> (around 70-80F degrees Fahrenheit, and 70% relative humidity). A short,