Could you please clean the bathroom? And also remember to take the hair out of the drain.
Would you mind cleaning the bath and shower? Please don't forget to remove the hair from the drain.
上記の二つ目の例文はもう少し丁寧でやわらかい言い方ですが、家族どうしでもおかしくないおかしくないです。
Can you -> Could you -> Would you mind
一番カジュアルな言い方から一番丁寧な言い方の順序です。
〜忘れないでね = (Please) don't forget to ~
(Please) remember to ~