These will still work fine, They are just past their use by date. 

 Water-based and biodegradable liquid which does Powerful deep cleaning, ideal preparation for re-proofing.

Without prior cleaning, the DWR treatment sticks to the dirt on the surface of the fabric, and when it falls off - so does any water repellency.

Fabsil Universal Cleaner is a mild detergent with a great cleaning action that removes dirt from the surface of all fabrics without leaving behind any residues that can effect subsequent treatments.