Starting on Cayston today--questions on sterilizing.

Hi all. Yes, this is day one. I've been nebbing sod chlor and even did Toby off and on for around seven years. Did my first Cayston today. Snapped the metal band on the first three attempts. Had to get a dental pic, sterilize it and salvaged all but one. If there are any suggestions that can make the unbanding successful, I'm listening. My other question about sterilizing is this... The company instructions say to only use boiling water for sterilizing purpose but I've read they only want us to use that method because that is only how they tested their product. I watched a video that said you can use a baby bottle sterilizer. I have one and will be checking the temp to make sure it gets as hot as boiling water (212 degrees). I of course want to make sure I'm killing the bacteria but if the daily time-consuming process can be made easier, let's do it. Thank you all.