I have been making yogurt in my Yogotherm for years now and absolutely love it. No matter where we are I can still make a successful batch due to no electric power needed. HOWEVER once in a while someone jogs the freshly cultured milk and milk spills out of the pail and penetrates this styrofoam insulator. Although I immediately wash it, I have yet to find a way to get it perfectly clean so after a while mold beings to grow! Yuk! Time to purchase a replacement. I am SO thankful that Yogotherm sales replacements. Now I am back to a "like new" Yogotherm and hoping no spills will happen. Due to it not normally coming into contact with the yogurt/milk this insert does not require cleaning after each use. I think this is the second or third insert I have purchased from Cultures for Health. Their service, shipping and prices have always been good.
Happy yogurt making! (Posted on 11/23/2016)