Clear Night Vision

Grandma used to tell us a little soap and elbow grease can get anything out. Though, unless granny was a green beret she probably couldn't guarantee that worked on Night Vision binoculars. They have very sensitive lenses. Using a regular rag with regular soap and water could do more damage than good. So to protect your investment, invest in a cleaning kit. They usually won't run you much more than $10 bucks. Inside one these kits you'll usually find:
• A brush,
• lens cleaning fluid
• lens tissue
• lint less cleaning cloth
• cotton swabs
Since dirt is mostly an outdoor thing most of these kits are packed together in a durable-to-go pack. So you can keep clean and keep moving.