There is a difference between contact Cleaners, and a contact deoxidizer. A cleaner will clean the contact, where a deoxidizer will remove and prevent oxygen from occurring on the contact.
Since oxygen is considered an insulator, it can create noise, static, or overall signal attenuation. Some cleaners may feature deox, but the potency may not be as strong. Deox is especially important for auido signal, antenna, or other small voltage signal connections.
Please see These Deoxidizer Options, notice there are different percentage levels of deox, and some specially formulated for gold contacts. Some of these options feature lubricant, which can be used as a preventative for reducing wear. 2220-SK-AV35-ND is also a kit with various essential DeoxIT products.