This stuff is great! Too many people don't understand that products like WD-40 and other chemical lubricants are horrible for bikes! Spraying WD-40 on your chain, freewheel, or other moving parts is sure to cause the parts to clog and deteriorate, sometimes leading to some really serious damage.
Boeshield T9 is not like that at all, and it's perfectly engineered as a dry lube for chains or a freewheel lubricant. Also, it dispels rust perfectly and has built up a standalone reputation as the go-to product for rust treatment on frames. I just got one powdercoated, and I purchased this large can of T9 to coat the interior of the tubes, to prevent rust from developing.