Although you might be tempted to blow on the lenses to remove dust, the moisture from your breath will actually cause the dirt particles to stick to the lenses. Tilting the binoculars as you work prevents the dust and dirt from falling back onto the lenses.
You can buy an air blower pump and other binocular cleaning supplies from photography supply stores, some outdoor supply stores, or online.
The bristles of the lens cleaning pen are designed to be gentle on the most delicate lenses so they won’t scratch your binoculars.
It’s important to use designated lens cleaning solution instead of window cleaners. Household cleaning products can strip the protective coatings from your binocular lenses.
Your binocular lenses are now clean and ready to use! If you don’t plan on using them right away, remember to put the protective caps back on the lenses.
Your lenses will last longer with proper cleaning especially if you’re not cleaning them several times a week.
If your binoculars do get exposed to moisture, leave the caps off of the lenses and let them dry out completely before storing them.
You could also ask photography supply stores if they clean binoculars.
For short term storage, you could lay the binoculars flat and place a clean cloth over them to protect the lenses from dust.
