Would you and HOW?

Nope. Research (search the online new england journal of medicine) has shown that people habitually overestimate calories burned and underestimate calories eaten.

Therefore, I try to underestimate calories burned and overestimate calories eaten - to compensate for that.

I've been running around work all day, bending over to tag material, going up and down the stairs, leaning down, picking my big old self up, walking from one side to another... I'm exhausted but IDK how to or if I should input that into my Cardio workout for today. Any tips?

I use a fitbit one. It records all of that kind of thing. I wear it all day and it talks to mfp. I don't have to worry anymore. I usually walk for exercise too.

I too have a very active job. I simply set my activity level for moderately active. I wear a pedometer and have a good idea of what an average day looks like so I do log some of the calories burned on excessively busy days. Ie. I normally walk 6 miles a day in an average shift but on days I do 10 miles I log an extra 100 calories burned. Largely because those extra mileage days are also extra heavy lifting days usually. So that extra 4 miles was probably done carrying 25-50 lb. boxes.

I logged some of my spring cleaning, because I was starving and needed the extra cals.

That's borderline cheating. "Oh I'm hungry, but I walked 27 extra feet and since I dropped a can of tomatoes I bent over to pick it up so I'll count that as exerise so I can eat some more." How ridiculous that sounds.
ETA: If you want more calories to eat do some legitimate exercise - take a walk. Don't count cleaning.

Don't count it as exercise, but if you have a job where you're on your feet all day, and doing lifting and carrying and stuff like that, you should set your activity level to moderately active, rather than sedentary. This better accounts for the additional calories burned in an active job compared to a desk job, than logging your work as exercise.

I logged some of my spring cleaning, because I was starving and needed the extra cals.

That's borderline cheating. "Oh I'm hungry, but I walked 27 extra feet and since I dropped a can of tomatoes I bent over to pick it up so I'll count that as exerise so I can eat some more." How ridiculous that sounds.
ETA: If you want more calories to eat do some legitimate exercise - take a walk. Don't count cleaning.

no it's not. Notice I said spring cleaning not normal cleaning i.e a concentrated effort I do once a year. If I spring clean for 9 hours up and down, washing windows and walls, whereas normally I am lightly active and I add an extra 200 calories, because I am starving after all this, I am adapting my schedule to my life. This is not a diet for me, but a life style and depriving myself of food when I am starving isn't going to work in the long run. Since I managed to lose a pound instead of half as scheduled that week, I assume that it wasn't an issue, legitimate exercise or not.

I also have my settings to sedentary and log if necessary. If I've had a really active day, like the other day when some of my stuff arrived from Ireland and I carried 160kg of boxes up the stairs I logged it as 20 minutes of cardio.

And spring cleaning the way you guys are describing it seems like a real workout, so I wouldn't hesitate to log it. I agree with sunsetzen that there is no need to be condescending. We are all here in one boat pretty much, let's just support each other.

No.