I was concerned when the box was crushed and could smell the scent but the syringes were fine as well as the LED light.I drink a lot of coffee so I need to do the process more than one time.The directions recommends doing the process two more times after the first use. I saw results after one use. It was hard not allowing the edges of the molding to curl in after removing it from the boiling water ,but hold it at a good angle and try again after separating if the edges do touch. I boiled it exactly the way the instructions detailed and repeated the process at least twice on both the top and bottom moldings to make sure it fits the right way. The process is time consuming so make sure you have the time to read and follow the directions more than once. The product was worth the cost.