How do you clean you bottles?

I clean them thoroughly before first time I use them, afterwards they get emptied by water 2-3 times from the tap to remove the yeast, then they get into StarSan bath overnight, then again emptied with 2-3 times tap water to remove StarSan leftovers, and just before use I put them in the cold oven and heats them to 120`C for 20-30 min. Letting them cool a bit off coz to my hands 🙂