Cleaning my Lunette

Hey folks,

I'm just starting my second cycle with my Lunette Diana! Up until now I've been just using warm water to clean it, but I thought I'd try something stronger this cycle. I figure a decent clean once a cycle is a good idea :) I picked up some hydrogen peroxide from the local chemist (3% solution - 3g/100ml) and was wondering if there is a rule of thumb for how strong to make the solution? Also since I live at home I bought a plastic container with a screw on lid - I'll probably be keeping it in my room while soaking and the last thing I need is hydrogen peroxide spilled everywhere! >.< is it ok to have it in a sealed container while it soaks?

Cheers!