Shelf life of adhesive & grout for wall tiles

I have a big tub of BAL Green Star adhesive. I bought about 15 months ago . It says it has a shelf life of 12 months . It has been kept in our living room! . Should I bin it, or use it, or use it with a few tiles and see how it sticks them?

(Similar for BAL Micromix 2 grout)

Thanks in advance
Paul

 

Thanks for that. If I test it on a few tiles and its sets hard presumably its Ok or could it seem to be OK and deteriorate later so the tiles come loose?
I only bought it with the tiles as they offered a small discount if bought together. Should have known better.
At least we have bought all the tiles we think we need because Topps are always withdrawing ranges.

 

Thanks very much. I will do.
Seeing I have just bought over a grand's worth of tiles for kitchen & utility room I am now sure you are right.