- Remove the damaged batteries and recycle them properly (check your local sanitation department for the appropriate disposal method of alkaline batteries).
- Wipe as much of the corrosion away as possible with a clean cloth.
- Dip a clean cotton swab into white vinegar and brush it directly onto the corroded springs and battery contacts. Repeat the process until all the white residue is removed.
- Using a clean cloth or new cotton swab, wipe off any residue left by the liquefied corrosion and white vinegar. Once completely dry, insert new batteries.