How to Clean Foggy Dirty Double Pane Windows

Mix 8 ounces of bleach with 1 gallon of warm water.

Drill into the upper left corner of the window frame using the power drill fitted with the 1/8-inch carbide drill bit. Allow 1/4-inch margin between the hole and the edge of the metal window frame.

Spray the water onto the drill bit every five seconds to maintain a cool drill bit using the spray bottle filled with water. Although the carbide drill bit can withstand the heat, the water will help maintain a low temperature and a safer work environment.

Drill a hole into the upper right corner of the window frame using the power drill fitted with the 1/8-inch carbide drill bit. Allow 1/4 inch margin between the hole and the edge of the metal window frame.

Drill a third "drain hole" into the lower left-hand corner of the window frame using the power drill fitted with the 1/8-inch carbide drill, making sure to keep the bit cool with the spray bottle.

Insert the 1/8-inch rubber plug into the bottom left-hand drill hole. This hole will serve as your drain hole.

Slide the 1/8-inch plastic tubing through the right drill hole until the inside tip reaches the bottom.

Insert the funnel into outer tip of the 1/8-inch plastic tubing.

Pour the bleach water into the funnel, allowing it to fill the space between the dual panes. Allow the bleach water to soak for 30 minutes. The bleach will get rid of nearly all stains and molds that arise from gathered moisture.

Place the bucket beneath the bottom drain hole.

Pull the plug and allow the water to drain into the bucket.

Apply cellophane tape over the hole. The tape will keep insects from infesting your home.

Poke a hole into the center of the tape using the needle. The hole will allow the moisture that gets captured between the panes of glass to dissipate rather than accumulate.