Question

why should oil and Fat not be poured into the drains​

Answer 1

Answer:

Eventually they'll cause water from the sewer to flow back up into your drains, which can make for a very, very bad day. ... This giant, greasy mess can clearly cause a lot of damage to the sewer, but it can also clog up your pipes as well.

Explanation:

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Answer 2

Answer:

They can harden and block the pipes

Explanation:

cooking oil and fats should be thrown down in drains because

in an open drain the fats clog the soil pores reducing its effectiveness in filtering water

hope this helps you...