shadow_dh · 6-Year Club · 2 points ·
It's fine if you poor a good amount of hot water down the sink so it reaches the sewers as well the greese does not harden unless it gets cold but if your drainage of the sink has low incline and is far from proper sewer putting greese in the sink is a time bomb especially in winter as it will harden at some point and the more you poor the bigger the layer will get until it's completely clogged.

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