Thank you very kindly for the guide, super useful.

Now the number one tipp:
The Bucket is the best disposable tool for a number of reasons:
1) It let's you Mop up first while you can dump trash, bullets and incinerated bodies in them, since they do not pollute the water
2) It has about 30% the capacity of the bin if you incinerate bodies first and fullfills a second role
3) it takes 20-30% of all bullets in any map combined with the ability to stack them for transport they make up for their small size.
4) holding left mouse (someitimes it requires you to click once) will let you rotate slowly so you can plant seed without touching the seeds.
5) you can wash your mop completely 5 times and then it is best used for transporting the intestines or limbs
6) i started to use the mop by standing on it (good way to stop tipping over the bucket in early games and to reach higher up) however it is more efficient to place the buckets lower than yourself and use the overly long range to the mop, reaching from above

Actually this map is fairly easy if you take some preparation:
1) take a Plasmawelder with you from your office and start torching any plant and bigger bodies you can find (no heads, arms or intestines). Any other trash than cans is also good.
2). When you use the plasma welder: one 2 seconds burst to warm up and short klicks to the center of gravity of any object shall incinerate quickly. Getting close to overheattemperature (when 1 or 3 flames start going throught the whole room) is efficient if you remember to keep the breaks between klicks longer, overheating will produce more mess to clean.
3) Mop up immediatley what you just burned because it is very hard to see burn marks in the beds. Taking a bucket somewhere close to you is a good idea in any map.

after spending a freaking hour getting all the seeds needed to put in the empty soil boxes, i figured out a quicker way to bring them around instead of going back for 1 seed at the time. get a fresh water bucket, knock that sucker over and put a bunch of seeds in the empty bucket. now you can carry around a bucket of seeds instead of going back for 1 new seed every time.

I burn these stuff too unless I'm tired of using the AW. And it's true that using the furnace door like you say is easier. I don't even bother with the other door :p.

some extra things to note:
1. You can melt bodies and other organic things with the weldergun. Do this with the large alien torsos that wont fit in the bins, the weeds, and the pus sacs.
2. it is possible to throw things VERY far in this game. it helps to have high sensitivity on your mouse. allow me to explain: just pick something up, look backwards to the place you want to throw it, and swing your mouse towards the place you want the thing. then, let go as your swinging it. the amazing physics engine will send it flying as fast as the sensitivity of how fast you moved it.
3. use the furnace door that is farthest from the entrance to the starting room. the front door of the furnace makes it very difficult to quickly deposite it. to chuck and suck. to flail then bail. to throw and blow. to toss and.... floss. hooray for dyslexic typing.