+1 for the Wipeout and Accelerator. Great stuff especially if you don't have time to clean it out within a time frame. Can be left over night unlike a lot of the solvents out there.
Used the Forest Bore Foam which gave good results although it can be a little messy if you're not prepped for it.
Using the Tetra Copper Solvent at the moment and it's doing a good job too. It's more "gloopy" than the Wipeout so sticks to the nylon and phosphor brushes better.
As with all of them, they work better when you aggravate them with brushes and scrub but you'll have to wait for the Bore Foam to die down before doing this.
Second what Rider said, all will eat the phosphor bronze brush so give it a wash off afterwards.