When a spill is more than a wipe-up
Most blood spills we're called to have one thing in common: someone already tried to clean them. A towel took care of the surface, but there's still staining in the grout, a smell from the rug, or a dark line along the baseboard that wasn't there before.
Blood spills happen after nosebleeds, falls, broken glass, kitchen accidents and medical events. They happen in businesses too: a customer injured in an aisle, an employee hurt in a back room, a fight in a parking lot. Schools, gyms and apartment common areas see their share, and landlords sometimes find an old spill only when a rental turns over. The size of the spill matters less than where it landed. Blood on sealed tile is straightforward. Blood on unsealed wood, carpet, fabric or drywall is not.
Why a mop and bucket can spread it
Water and a mop dilute blood and push it outward, into cracks and across a wider area. On carpet, scrubbing drives it down into the pad. On grout and textured surfaces, it settles into pores where a quick wipe won't reach.
CDC guidance for blood spills in healthcare settings starts with removing the visible material using absorbent products, then cleaning, then decontaminating. CDC also notes that bleach solutions are meant for nonporous surfaces once most of the organic matter is gone, and that large volumes of blood can keep a disinfectant from fully working. That sequence is the core of how we approach every spill.
What our team does on site
- Isolate the area We mark off the spill and the path people walked through it, so blood isn't carried to other rooms on shoes or equipment.
- Absorb and lift Liquid and dried material are taken up with absorbent products before any cleaning solution goes down.
- Trace the spread We look under furniture and rugs, along trim, behind appliances and into seams to find how far the spill actually traveled.
- Clean and disinfect Each hard surface is cleaned and then treated with an EPA-registered disinfectant, kept wet for the full contact time on its label.
- Cut out saturated materials If blood has soaked into carpet pad, a cushion or a section of drywall, we explain why it needs to go and remove it.
- Bag, label and dispose Removed materials are packaged and disposed of appropriately, and we walk the area with you before we leave.
Surfaces and what usually happens to them
- Sealed tile, stone, laminate and vinyl: usually cleaned and disinfected in place, with extra attention to grout and seams
- Hardwood: finished boards often clean up; blood that has reached bare wood or gaps between boards may mean sections come out
- Carpet and pad: surface spots may be treatable, but saturated pad is typically cut out and the subfloor cleaned
- Painted walls and trim: cleaned and disinfected; soaked drywall or baseboard may be removed
- Countertops, appliances and fixtures: cleaned and disinfected, including handles, edges and the gaps around them
- Upholstered furniture: depends on depth; see our page on carpet and upholstery fluid removal
Before we arrive
You don't need to do anything except keep people and pets away from the area. If you want to help, these are the useful things and the things to skip.
- Do keep children and animals out of the room and close the door if you can
- Do wear disposable gloves if you must touch anything, and wash your hands with soap and water afterward
- Don't run a steam cleaner or carpet shampooer over the spot
- Don't throw out rugs or cushions into household trash before we've looked at them
- Don't mix bleach with other cleaners
When the spill is part of something larger
If the blood came from a serious injury, a violent incident or a death, the work often extends beyond one spill, and you may find our pages on trauma scene cleanup or crime scenes more relevant. If police are involved, wait until they have released the property before any cleanup starts.
After removal, replacing flooring or drywall goes to a contractor. Questions about a possible exposure, such as blood on broken skin, belong with a doctor. We'll point you in the right direction for anything outside our work. If a smell remains once the source is gone, our odor removal page explains the next steps.