What is the difference between this and the spray? Specifically looking for best product to use for NES games and 72 pin connector.

To me the main advantage of the spray is more accessibility and the 'flushing' benefit. The brush and needle applicators have a stronger solution 100 vs 5; flushing can be accomplished with compressed air when practical and a proper safety I.Q. I try to use a transfer applicator to minimize cross-contamination; often toothpicks. Great product; but not idiot proof.

Can I use this to clean the charging port of my iPhone?

Absolutely!! I have used this liquid to clean my ham radio, flashlights, clock battery holders - its uses are unlimited.

Can this be used on larger appliances? I see most people are using it on pc's and sound equipment.

The size wouldn't matter. All you are applying it to is electrical contacts, so yes it can be used on any size contact ... I've known of a chap that used it to clean the contacts on his electric meter coming into his house. That's 220 VAC @ 200 amps. Pretty big stuff.

anyone used this on spark plug leads to clean and improve contact between spark plug and the lead?

A coarse scrub will do for a spark plug lead that is carrying 30,000 V. This product is for cleaning little smudges that might bother a 5V signal.

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⚡ Keep your connections flawless — because every signal counts!

CONDUCTIVITY BOOSTER - Enhances electrical flow to eliminate signal dropouts and intermittent connections.
UNIVERSAL COMPATIBILITY - Perfect for everything from HDMI cables to heavy machinery connectors.
PRECISION BRUSH APPLICATOR - Easy, mess-free application ensures targeted treatment every time.
NOISE INTERFERENCE REDUCER - Minimizes arcing and RFI for crystal-clear audio and data transmission.
ALL IN ONE CLEANER PROTECTOR - Cleans, deoxidizes, lubricates, and shields contacts from wear and abrasion.

CAIG LABORATORIES DeoxIT D100L-2DB is a 7.4mL premium contact cleaner that improves conductivity, reduces intermittent connections, and protects metal contacts across diverse industries. Its brush applicator delivers precise, mess-free application, making it ideal for electronics, automotive, marine, and more.

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Product Dimensions	3.18 x 10.16 x 19.35 cm; 32 g
Specific uses	personal
Item volume	7.4 Milliliters
Scent	Unscented
Number of pieces	1
Batteries required	No
Included components	Electric cleaner

CaigLABORATORIES DeoxIT D100L-2DB Brush Applicator, More Than A Contact Cleaner, 7.4mL, Pack of 1

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