KROWN rust treatment, is it any good?

[Lankytim]

Hi shitters.

 

There's a company pimping itself on facebook groups that does rustproofing for cars. It's a KROWN franchise by the looks of things. Id never heard of krown before and a quick google shows they're pretty big in Canada. For me Dinitrol is the absolute dogs bollocks for grot control but this Krown bunch seem to be pretty cheap in comparison. £200 odd to cavity wax box sections and coat the underside.

 

Does anyone have any experience with them?