After washing it, I waited for it to cool down and then I poured Silk Chocolate Milk into the moulds. The sticks were easy and don't really make a mess unless you overfill them. Yes, the more you put in and then add the stick, the stick displaces the liquid.... (Remember 3rd grade Science class.) After that, I placed them in a deep dish food container and then placed them into the freezer. I left them overnight as it was late when I made them. They came out beautifully!! I did have to tug gently at the sides and then push up from the bottom to get it out but it's fine. The mould goes back to how it was with a little push back.The only thing, I don't know why it really didn't come with instructions (ie cleaning, or correct placements). Also, it said to put them in the refrigerator, not the freezer. If you put them in the fridge, they won't freeze. THEY GO IN THE FREEZER!One last thing, someone mentioned they need a "drip catch" well, if you eat them as ice cream and not lollipops, you'll have no trouble. Mine, even with Silk milk instead of yogurt-based concoctions, hardly melted. Overall, they were delicious and I DO recommend them!