Hmmm, seems a waste to just throw them out as some of them are half decent brushes...
What I have ended up doing (and it worked a treat) is using Ultimate Airbrush Cleaner and some "The Masters Brush Cleaner and Preserver"...
Just took it slow and steady and soaked the brush in ultimate to start with, then agitated it a bit, I was shocked at how well the paint was coming off the brush with the Ultimate...
After a few goes of agitating, removing and wiping with some kitchen towel, I then used the brush cleaner and preserver, which also worked alright and seems to be able to get the shape of the brush back alright... Anyhow, here's some pics of beginning, middle and end for one of the brushes I had (and one of the worst ones to be fair)...



Stonkmer
;O)







