•A viral social media trend suggests pouring coffee grounds into toilets for cleaning and odor removal.
•Experts warn this hack is dangerous as coffee grounds do not dissolve and can form sticky, muddy blockages in pipes.
•Coffee grounds, especially when mixed with hair and soap scum, can harden like cement, leading to severe clogs.
•This issue is particularly problematic for old drainage pipes and apartment buildings, potentially affecting multiple residents.
•Professional plumbing services like snaking or hydro-jetting are required to clear such blockages, incurring high costs. Instead, use coffee grounds for gardening or cleaning utensils, disposing of them in the dustbin.