I've been reading threads regarding sterilisation etc and I'm on the right track.. I rinse each bottle as I use them and dunk in a mild bleach solution, then put on my bottle tree. They may stay there for a week upended and clean till I sterilise with Brewcraft nrs useing a pump. I put them back on the tree to drain and I fill them shorty afterwards. QUESTION : My tree is home made from wood. It gets a bleach solution dribbled on all the contact points on a regular basis. Should I pay particular attention to sterilising it ?