Good Glass Cleaner

Windex is a glass and hard-surface cleaner. Trusted by generations of consumers for its famous streak-free shine, Windex® Original is perfect for cleaning glass and more. Thanks to its key ingredient, Ammonia-D®, Windex® Original works on dirt before you wipe. However, I must admit if not on sale can be expensive.

I like windex but I find that using a muti purpose cleaner doesn't really work as efficient as the other selections used for only one use specifically.
I keep it in the house for back up and in case I run out of a product.