Here are a few more cleaning hacks to help blow the cobwebs and evidence away in Serial Cleaners.
1: Knock Knock - If you are precise enough, you can open a door in an enemy's face. This will knock them straight over giving you enough time to make a clean getaway.
2: Don’t Be a Drag - Dragging a body will cause extra mess.
This mess is extra mess you will have to clean up as it gets added to your vacuuming bar! But if you wrap up a body in a bag, it will leave no blood trail while being dragged.
It will also draw no attention to civilians when carried around public places.

3: Timing is Key - If you can time it right, you can lock a police officer inside a room, making your job that much easier... but you will need to have the correct key first.
4: Move without Sound – Pro-crime scene cleaners are never seen or heard.
While inside a crime scene, crouching allows you to move without making a sound. You can also hide behind low obstacles, so an enemy cannot see you.

5: Hide and Seek - If you are playing as Psycho, you can knocked-down enemies, pick them up, and then hide their unconscious bodies in various designated spots. This means that your cleaning job has just become a little more straightforward – so knock yourself out! …well, the enemies.