It doesn’t really clean the pipes
Coffee grounds are often considered a “scrub” for pipes, removing accumulated deposits. In fact, they adhere to the walls of the pipes and, over time, reduce their diameter, slowing the water flow.
It does not neutralize bad odors in the long term
While coffee grounds can absorb certain odors, this effect is only temporary. Worse still, if they accumulate and stagnate in the pipes, they can ferment and cause new unpleasant odors. Not really the desired effect.
It makes sanitary interventions more difficult
If your drains are clogged after repeated use of coffee grounds, conventional solutions like vinegar and baking soda may not be effective. The blockage is difficult to remove and may require pipe removal or professional intervention, which can quickly become expensive.
