Hoppe's No. 9 Bore Cleaner Foam - 12oz Spray Bottle - Removes Copper & Powder Residue

Hoppe's No. 9 Bore Cleaner Foam is a solvent-based cleaning spray designed to dissolve and remove copper fouling and powder residue from rifle and shotgun barrels without heavy scrubbing. The 12oz spray bottle delivers foam directly into the chamber, where it breaks down stubborn deposits and lifts them out during a short soak period. This is the classic go-to cleaner for shooters who want a reliable, efficient bore cleaning solution that works on centerfire rifles, rimfire rifles, and shotguns alike.

The foam formula works by chemical action rather than mechanical force—you spray, wait 15–30 minutes, and patch out the dissolved residue. The built-in color-change indicator is genuinely useful: the foam turns blue when copper is present and black when it's reacting with powder fouling, giving you visual feedback on what's being cleaned. That's a handy feature when you're running a quick range session or doing a full deep clean after a hunting trip.

Hoppe's No. 9 has been the standard bore cleaner in gun cases and range bags for decades, and with good reason. It's potent enough to handle heavy fouling but safe for regular use on quality barrels. Keep a 12oz bottle in your cleaning kit for rifles and shotguns, or grab multiple bottles if you shoot frequently or run a large collection.

Key Features

• Foam spray formula—apply from chamber to muzzle for even coverage
• Dissolves copper and powder fouling without aggressive scrubbing
• Color-change indicator: blue for copper removal, black for powder residue
• 15–30 minute soak time—efficient between shooting sessions or deep cleaning
• Works on centerfire rifles, rimfire rifles, and shotguns
• 12oz spray bottle—convenient size for range bag or cleaning kit

Specifications

Frequently Asked Questions

What does Hoppe's No. 9 Bore Cleaner Foam remove?

The foam dissolves and removes copper fouling and powder residue from barrel bores. The color-change indicator shows you the work being done: the foam turns blue when reacting with copper deposits and black when breaking down powder residue.

How do I use the foam cleaner?

Allow your barrel to cool for about 5 minutes after shooting. Shake the can well, then spray the foam from the chamber toward the muzzle. Let it soak for 15–30 minutes to dissolve the fouling, then use a cleaning rod with patches to remove the foam and dissolved residue from the bore.

What firearms can I use this cleaner on?

Hoppe's No. 9 Bore Cleaner Foam is safe for centerfire rifles, rimfire rifles, and shotguns. Always follow the product directions and allow barrels to cool before cleaning.

Is brushing required with this foam?

No. The foam's chemical action dissolves fouling without requiring heavy scrubbing or aggressive mechanical cleaning. A patch and cleaning rod are used to remove the dissolved residue after the soak period.