In my story, several people have been shot and killed. Now there's blood all over this guy's house and he doesn't have the option to go elsewhere. How could he clean up all the blood and how can he (Respectfully) remove the bodies of the people who were just killed?
Legally, he can't. He's in for a world of hurt if he tampers with the scene, no matter what his intentions are. As soon as the cops arrive (assuming that happens in your story) he is going to be suspect #1 for having tried to clean the place up. He's going to be arrested and taken in, even if later he is absolved. Is the police involved in this scene? Do they come? If they do, this "no option to go elsewhere" is going to be superseded by due process.
For the sake of my story, there are no cops. It's the zombie apocalypse and a guy just wants to clean up his house so he can get back to trying to survive. Under normal circumstances we'd call this a crime scene, but here it's an act of self-defense as the zombies broke in and tried to eat the guy.
Ah, understood. If he can get his hands on formaldehyde, I understand it's pretty good at getting rid of blood. Does the slaughter take place over a carpeted area? If so, the padding underneath the carpet is a bigger problem than the carpet itself. The blood will soak through and eventually it's going to smell of rot. May have to pull that up. If it's over tile or wood floor, just a ton of mopping. Blood starts to congeal and become something of a gel when in large amounts. Have to mop it up quickly or it gets harder to get rid of. There may not be any really respectful way to get rid of the bodies. Are there zombies outside? Is it safe to be out there for any amount of time? If not, burying the bodies is going to prove difficult. Takes longer to dig a grave than you would think.
He's killed the nearby zombies and new ones aren't likely to return to the area for about 12 hours. Maybe I'll just have him burn the bodies. Anyway, what about blood that got on the walls, bedsheets, furniture and other stuff?
A human body takes a day or more to burn. We're juicy. It would mean a ton of wood for kindling. Walls and sheets and the like, cold water and detergent. Not hot water. Never hot water for blood. Cold.
Some traditional ways of disposing of bodies are: burial, cremation, entombing and putting them on boats on their own (possibly on fire). Burial and cremation would take time, as others have pointed out, as would the boat option. How about the character puts them in an empty house somewhere? I assume that after an apocalypse there would be plenty of empty buildings. Cleaning the house, assuming he doesn't want it perfectly clean, could be accomplished by cleaning hard surfaces with weak bleach solution. For soft things, such as curtains and carpets, would probably be best replaced with easily taken new ones.
Is the cleaning for aesthetic purposes or is to remove the smell of blood so as not to attract zombies? Most houses will have chlorine bleach. Even extensive washing with this will leave detectable traces of blood, however I think most readers would accept that washing an area with neat domestic bleach would make most houses inoffensive to both humans and the undead. Unless any zombie in the vicinity was a wine-tester with a refined olfactory apparatus before they were zombed, they would not smell the blood. Hydrogen peroxide is much more efficient at destroying blood cells and constituent proteins etc. Furnishing your protagonist with large volumes of H2O2 would also give them other interesting possibilities. http://explosives.wonderhowto.com/how-to/make-acetone-peroxide-primary-high-explosive-0132649/
Formaldehyde is pretty toxic. The fumes will destroy your lungs, and it takes a long time to get the contamination down to a safe level.
It seems that bleach is the go-to method often used. There are companies that specialize in crime scene clean up. I've seen some shows on this, and one of them was, I think, even called Crime Scene Clean Up. There are some very gross stories. But, if you google that, you might be able to find some of the methods they use, and why they use them.
Chlorine bleach might be more plentiful during a zombie apocalypse than other chemicals. Considering the potential dangers of blood born disease and the general "icky" factor, he might want to replace sheets and fabric funiture.
To clean up the blood from the undead you will need to mix one part ice water, one part laundry detergent (without bleach), and one part hydrogen peroxide. The ice water is going to keep the blood form spreading, by congealing it. The hydrogen peroxide will deteriorate the red blood cells, killing any chance of disease from spreading, and keeping the blood cells from sticking to the fibers in the fabric. And the laundry detergent will clean and disinfect the area, removing stains from your floors, walls, and furniture. But first you need to dispose of those dead-undead bodies! Wrap them into the sheets, a bedspread, or some plastic, (preferably some tarps that are water proof, to keep from smearing the blood as you drag them through the house). Drag them to the car, or truck and drive them away from the scene. Take them to a nice bridge and throw them over! You may want to weigh them down first, to keep them from floating to the surface; which may attract more undead. Now, if you are worried that there is too much blood being spilled in your crime scene, remember that keeping a body upright will contain most of the blood inside the thorax, keeping your scene cleaner. Blood spatter can be kept off the furniture, by having dust covers already on the furniture. Like at your nana's house! Plus they can help you dispose of the bodies! For example, "I always hated those creaky, hard, cold plastic covers on the furniture", Joe thought to himself, as hulked the undead corpse onto the plastic covering. " I have to move quickly", he said out loud, pulling the 185 pound headless body of his neighbor Phil, onto the old wrinkled plastic cover. " I hated you", he said to Phil's cold lifeless body, "you were always a mooch!"
Realistically, if it's a teenage protagonist - he just sits there with his kfc debris, and leaves all the corpses in the corners, the corridor for somebody else to deal with, as per usual, neeeeh. How bout a vat of lemon juice to break down the bones, flush the sticks? Also vinegar is powerful in the wrong hands. Not sure about bleach, the wife would have to be out of town or something, leave it for the washing-machine.
