Oh my gosh, I have to ask, is there an easy way of cleaning slow feeder bowls? Rox has one like this https://www.amazon.co.uk/gp/aw/d/B00FPKNRCS/ref=mp_s_a_1_11?ie=UTF8&qid=1550090015&sr=8-11&keywords=dog+slow+feeder+bowl&th=1&psc=1 The orange one with the spiral. It's a nightmare to clean, especially since she has salmon oil on her dinner every night, it get so stinky and gets a white film over it I need an easy way to clean it without putting it in the dishwasher, I've been using boiling water and washing up liquid, leaving it to soak, then scrubbing it best i can with one of those scouring sponges. It still takes a bit of elbow grease and it's tricky to get right down to the bottom. Anyone have any tips?