Ramsey – some folk have not found the benefits I have – see science officer above
IME it lasts 100+ dirty mtb miles and 1000 wet road miles
Yes you take the chain off, dunk it in the tin of molten wax, stir it a few times, then hang it over the tine while the excess drops off. refit chain, run it thru a rag a few times to make sure there is no excess ( cos it stains stuff badly)
After a couple of rides the outside of the chain will look dry – but inside the rollers the wax is still there lubing the chain. Again IME chain life is hugely extended compared to bicycle lubs and cassette wear greatly reduced and its nice to have a well lubed chain the whole time
The stuff stinks and stains badly if you get it on clothes and is a bit off a faff but for me the fact you do not have to do it very often and the greatly increased chain life make up for it