I have a large patch of nettles in my garden and thought it would be good to make some liquid feed, so I put a bunch in a lidded bucket and topped it up with water, then placed it behind my shed to cook, unfortunately things got placed on top and around it and I forgot about it. That was two years ago I haven't had the courage to open the bucket yet, but I know it will smell awful. My question is will it still be ok to use and will I still need to dilute it 10/1 or will it need to be diluted more because of it's age. If it's no longer viable, can I just tip it on my compost heap, if not how should I dispose of it?