I agree with both Headshot and Eldron - it's super sticky and attracts gunk, but it's also really effective inside the chain. I soak a rag in isopropyl and clean the gunk off the outside, but I leave the factory stuff inside to do its job and seal it in with a dry lube. Takes a long time for it to wash out, even in the wet.
The problem with washing the factory lube out from between the rollers is that it's very difficult to get a wax lube to penetrate all the way in afterwards unless you do the whole boiling thing, which is a bit of a hack.
If you don't mind a slightly grubby chain, an oil based lube will penetrate way better and give you far better chain life.