So I went into the bike shop today to pick up some degreaser to clean my girlfriend's bike (I had used the last of my citrus degreaser doing mine the day before). The guy at the shop said that they didn't carry citrus degreaser because it would damage the bike, they only had the spray foam stuff. Rather than go to another store I thought I would try the foam, just spray it on, wait a bit and rinse it off... sounds easy.

However, it was a real PITA compared to citrus degreaser and my parks chain cleaning machine, so I don't think I want to use it much. But I am wondering about what he said about it hurting my bike... he just feeding me a line?