Make sure the lid is on tight. I bought a small personal blender that you can just blend and go. I brought it to work with me and was drinking the smoothie while I was working on the floor before the store opened. All of the sudden I felt all this wet gooshiness. I looked down and the smoothie had dumped out all down the front of my shirt. I ran over to Food Avenue and rinsed my shirt off. I was grateful that the FA person hadn't arrived yet and that the store was closed because I'm sure I was flashing the goods.
Green smoothies are an acquired taste. My second smoothie ever had spinach, kale, lemon, apple, and cucumber in it. Dis.Gus.Ting. I choked down about half of it before I added a banana which made it at least bearable. Don't put lemon in a smoothie. Ever. I guess I shouldn't say EVER, maybe that's a little harsh, but in this particular instance parts of the lemon didn't blend all the way and I kept getting sour bits which didn't help its case. Here's the recipe in case you're more accustomed to green smoothies.
Order of operation is important. (or I need a different blender) For example, don't put spinach in first. On my little mixer it just chops it up and and then spins and spins without getting to any of the other ingredients and then you start to get that metallic-y smell coming from the blender. Not good. Kind of along these same lines is don't put a whole frozen strawberry in there and expect it to blend with no problem. Target sells frozen strawberries that are sliced though, very handy.
Overall I am really happy with the smoothies and I will keep making them. It's nice to get a big chunk of my fruits and veggies for the day out of the way in one fell swoop.