How to sterilize stuff?

Hihi! Been a long time since I've self harmed fully, some cuts and sessions here and there when stress peaks or mental health spirals, but I haven't had a chance to clean or disinfect anything. Would using bleach be a bad idea?

I'm not looking for information to hurt myself badly or anything of that sort, if this isn't the place for that please let me know and I'll delete this post <3 I'd just like to know so that I lower chances of infection, I cope with mental health by doing this but in no way is it a good thing and I know that.