Cloe's Mom!!!
Don't boil it. There are little parts that can melt. I made that mistake.. and it's bad because it will affect how much meds the child gets.. So, here's what to do.... You can either A) Soak for 30 minutes in a solution of one part distilled white vinegar and two parts distilled water. After use, throw out the vinegar and water solution; do not re-use it. Then, rinse again for 30 seconds in distilled water only (to make sure you got everything off) or B) They do sell nebulizer cleaner at Walgreens. I find it kind of strong for kids.. and my pediatrician told me that the above mentioned way was equally as affective and safer. But, make sure you shake out all fluid between usages.. make sure you store mouth pieces and tubes in a bag so that they don't gather dust and such. hope that helps!