The reason to use it is genuine: ammonia evaporates without residue, which is what gives a streak-free finish on glass and stainless. The reason to be careful is equally real, because it can cloud or lift window tint film, attack some screen coatings and dull certain sealed surfaces. Never combine with bleach. See glass cleaners, bleach cleaners and cleaning chemicals.

Commercial ammonia-style cleaning bottles arranged on a janitorial trolley with cloths, spray bottles and a wet floor sign in a clean facility corridor.
Ammonia Cleaners

Shop ammonia cleaners for compatible hard surfaces, offices, homes, hospitality venues and cleaning teams.