Best way to clean a window screen w/out removal?

[cbelt3]

Blow, then spray. I've actually used a garden hose run through the house in the past. Spray on a little ammonia, then hose 'er down with hot water.

The downside is that you end up with dirt stains on your siding.

I am curious, though. Most modern window screens are designed to be removed from inside the house. It often requires a bit of legerdemain to stick 'em back in , but it can be done.