Reccomended rust remover/protectant?

Morning all, sorry if this has been addressed elsewhere. It's my first truck and plan on keeping it long term. I wanted to know what products you all recommend to protect the undercarriage of the truck long term and what kind of maintenance to do regularly to prevent rust problems. I noticed rust on my front disk brakes this morning and only owned the truck 6 months.

Already did the ac drain mod/fix.

Thanks

 

Once you spray film on it you'll never want to crawl under it again.

 

Fair enough haha. Sorry for the noob question I'll search longer next time. Appreciate your help.

End thread.

 

Fluid film for the win. Stay away from anything that hardens over time as it will trap moisture.

 

Fluid film, I usually apply it twice a year.

 

3M Cavity Wax on mine, no bad smell.