Oxidation on Terminal Strips & Cables - Phenolic

We have numerous exterior & some interior junction boxes for field wiring. I would like to address oxidation on the terminal strips and cables that are terminated under them.

Some of the terminal blocks have Allen Bradley soft white plastic; others are Weidmuller, Phoenix, and Allen Bradley hard plastic, or phenolic.

After spraying the contact cleaner (possibly DeoxIT®), then possibly the DeoxIT® SHIELD, I do not want to have difficulty removing and re-terminating these cables due to a heavy insulating build up. What would you suggest?
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Treating the surface with DeoxIT® contact cleaner should not be an issue. We recommend that you perform an initial test on one setup, rather than treating a series initially.

Use care when applying the DeoxIT®, near soft white plastic (polyethylene) or phenolic surfaces, because the solution inadvertently be absorbed. Direct the treatment to the connector surface, and drape a clean cloth over the phenolic or soft white plastic surfaces, if possible. If a little gets on them, wipe it off.

The DeoxIT® SHIELD would be an excellent final step, because it will provide a microscopic, yet impenetrable protective barrier for an indefinite period of time.

NOTE:
DeoxIT® GOLD (formerly ProGold)
DeoxIT® SHIELD (formerly PreservIT)
DeoxIT® FaderLube (formerly CaiLube MCL)
DeoxIT® Grease Type M260 & L260 Paste (formerly CaiLube Grease).