1 bottle of NIX to 4L of distilled water and keep it in an opaque container because light breaks the active ingredient down. If followed the unused mixture will keep for up to a year. I think I will be always keeping a bottle of NIX around and may always have some ready to be used.
Prevention is key of course but you never know. I will be taking more proactive preventioneasures. I think i will use te NIX spray every six months. This is just info I read but it has been repeated by several sources. Many of which are quite reliable and respected. Just what I have found so far. If you have more information please share because everyone benefits from these discussions.