@atcrugwashing: Why does my rug smell like ammonia? That ammonia smell is pet urine breaking down in the rug. It usually means the urine has reached the foundation, and surface cleaning won't fix that. This nylon rug is coming out of the trough after its treatment and is about to get its full wash. Saving one rug at a time. Around The Clock (ATC) serves Levittown, Hicksville and all of Long Island. Book your pickup. We deliver 7 days a week across Long Island.