Best rust trearment product?

[TEB]

Hey There, Iv noticed a few rust spots under the bonnet of my car that are spreading to the topside where they will be visible, but i want to treat them before it gets to that stage.

Can anyone reccomend a rust treatment product that works well and will stop it spreading or are they all the same

Thanks

[LesterPiglet1]

I use Jenolite, it works very well. Haven't tried anything else tbh.