Doug O.wrote a review of Dumonde Tech Lite Bicycle Chain Lubrication on July 2, 2019
Familiarity: I've put it through the wringer
I bought some of this at my local bike shop last year and used it all through the summer and winter in the Northwest. Protects the chain well when it is wet out and lasts a long time in the summer riding. The LBS told me not to add too much and wait until you just start to hear your chain run a little rough and then put a little on.