You could mix it with a few litres of water as a test solution...make sure its fully mushed and diluted into the water. Possibly best to dry it first, then crumble and dilute - avoiding bacterial activity.
Let us know how you go and what you end up doing hey?
Cheers
PS: this was the best forum last year in Spring, tons of gardening tips, so stay tuned and we will reciprocate!!
L
