I used warm water....
With PSG i wouldnt use warm water as it has a pretty alarming smell at the best of times, but it does do a good job, especially on white wool.
If you dont think it worked very well, try putting more down. Remember that wool drinks a lot of water on pre-spray and needs much more per metre than synthetics.
One other think i have found is that it works much better if you load it with citraboost. Not only does it make the smell more "organic", but it does a much better job on the traffic lanes.
Graeme
Access Cleaning Solutions