What is your favourite floor cleaner liquid and why?

I prefer emacs

Idk man, I'm more of a nano guy myself for most things.
- I actually use nano in the terminal, I just wanted to reignite the old flame war
Me too. I once opened vim in my kitchen and couldn't get back out for a month.
- Se that's why I just use Windows. Until they freeze up and then I can't get out
I have yet to meet a single person in real life who uses emacs
- Well, I used to.
I've been using vim or vi for decades! Mostly because I still can't figure out how to exit the editor.

Emacs works better

Personaly I like Nuka Cola.

Water, it drys.

Got a steam mop - just use plain water, will never go back. If there's a particularly dirty spot I may hit it with a little dish soap and a scrub brush, but otherwise it's 99% steam cleaning.

Didn't even know that existed! Thank you stranger. Is there one you'd recommend?
- Not OP, and I don’t have a brand recommendation, but a word of advice. If you get a steam mop, it may be beneficial to use distilled water and not tap water. If you have hard tap water, the junk will build up in your mop and you’ll need to clean it.
  
  Tap water will work just fine, but it will effectively shorten the lifespan.
  
  But I really can’t recommend a steam mop enough. No chemicals, just water and power. And it cleans even the nastiest of spills.
- Here's the one I use and enjoy (Shark S7001) - https://www.amazon.com/Shark-S7001-Steam-Scrubber-TBD/dp/B08QZTSHFX/
  
  I've only had it for about a year so I can't speak for its longevity, but I can appreciate that it scrubs and steams at the same time and does a pretty good job removing dirt etc.

I have carpet so the only cleaner I keep for regular everyday stuff with that is Resolve. If it's bad enough, I rent a Rug Doctor.

For the bathroom and kitchen, I just use a wet cloth with hot water and soap to do it by hand because they're fuckin' tiny. Owning a mop doesn't seem justified.

I get all my cleaning chems from the janitorial supply.

Super concentrated, and you get effectively 20 times for the same price.

You can buy a 4L jug for like $35, and a teaspoon is enough for an entire mop pail. Sounds like a lot of money until you realize that's an entire lifetime supply.

Damn this is an amazing tip!! Is there a particular janitorial brand you use that I use for a keyword search?
- The reason I suggest diectly going to janitorial supply is because you get the off-label stuff which is basically all the same chemicals for a good discount.
  
  It's not "zep brand pro industrial floor cleaner super duper wizbang" or anything, it will come in a blank jug with mixing ratios and the WHMIS info printed on it. Brands are for the public, janitorial supply is for frugal quality.
  
  Same thing with oven cleaner, it will just come in a can that says "concentrated oven cleaner".
  
  At most you might see something vague like "Bottled by XYZ Chem co, Montreal". Because that's all that happens with industrial soaps, degreasers, lubricants, etc - some factory buys a bunch of 240 gallon drums, and squirts them into smaller bottles.
  
  If you must search online, use Zep but seriously it's so much better just to go in person.

To be honest I was lazy at my old place and just used a wet Swiffer. I feel bad about it because I know that ain't clean.

Previously I used pine sol and hot water, or just dish soap and hot water on linoleum floors. Growing up we didn't have a mop so we just used rags and scrubbed by hand.

Murphy's Oil Soap for wood floors.

Because it works well and smells absolutely amazing.

Pinesol. Does a great job, smells good. Thats when I mop the whole floor though. For spills and such, usually just dishsoap/vinegar

I've been using zep, but i just ordered floor science from Amazon. I have stained concrete floors downstairs. I use Bona on the wood upstairs.

Pinesol or Fabuloso

Fabuloso is also a good fruit juice if you aren't paying attention
- Or you want a fun time. Little vodka and abuela will show you a party

"WHO USES FLOOR CLEANER? WHAT ARE YOU, AN ORDERLY FROM THE 1950s?!!"

People who own a mop and have a floor?
- You don't even need the mop. A rag gets the job done. Cleaning the floor is just part of cleaning.
- Sorry, it's from a sitcom (Superstore). It's funny because after the main character yells that at a customer, she is shown mopping the floor in the next scene.
- How do you clean your floor without a mop? Is floor cleaner liquid still allowed?
  
  Also what do you use a mop for without a floor?

vinegar. because it has many uses - floor cleaner, laundry detergent, toilet bowl cleaner, salad dressing ingredient, and great for making pickles.

Vinegar is a pretty good all purpose cleaner but I'd also flag that it's a pretty strong acid, which over time can cause issues for most natural surfaces (wood, stone, etc.).

It'll take time to notice but you'll wind up having to put in extra work to maintain good surface finishes.
- that's true

I use a liquid that consists of atoms.