@Viss I always buy a bottle of Nopesauce for a friend of mine. He complained that a bottle of v5 got moldy very quickly, I'll have to ask him if he refrigerated it or not. I noticed some gunk in the nozzle of my same batch of v5 a long, long time later, but I kept mine in the fridge.
This is a problem whenever dealing with homemade concoctions. If you don't add ascorbic acid or xantham gum or palm kernel oil like everything seems to have, it loses shelf life, but it also makes every batch a use it or lose it thing, and that's OK by me.