just an fyi since we are talking about bike maintenance - wd40 can be used to clean your drive train but then you are supposed to wipe it off and then apply actual chain lube.
This is easily bought at any bike shop for well under the 50 Euros being offered here
WD-40 somehow picked up the reputation for just spraying it on everything where for a lot of uses, it's not really something you want to leave on there and there are better products for lubrication... in almost every WD-40 use case it seems ;)
This is easily bought at any bike shop for well under the 50 Euros being offered here