How to get old unknown stains out of a rental carpet cheap
Carpet machines can push dirt deeper and make set-in stains worse, and replacing the carpet is completely out of a tight renter's budget. Using the wrong DIY fixes like standard cleaning methods or harsh chemicals can permanently lock in unknown spills, leaving you stuck with unsightly spots right before a lease ends.
What the numbers show
Counted from the threads quoted below. How we count
- The most recent one is from October 2026.
- This comes up 15.1× more often in r/CleaningTips than across the site as a whole.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Using Folex carpet cleaner3 people mentionedDid this help you?
- 2hiring professional carpet cleaners2 people mentionedDid this help you?
- 3Using a carpet cleaner machine with a home mix of water and soapDid this help you?
- 4Flushing the carpet with just waterDid this help you?
- 5Using rubbing alcohol and cotton roundsDid this help you?
- 6Using acetone soaked after rubbing alcoholDid this help you?
- 7Pinching the stain to lift it rather than rubbingDid this help you?
- 8Cutting fibers from a closet to patch the damaged areaDid this help you?
- 9Using damp rid containersDid this help you?
- 10Applying Peerless JAL Attack An OdourDid this help you?
- 11Smoking a cigarette in the same roomDid this help you?
- 12Opening windows for airflowDid this help you?
- 13Shampooing the carpetDid this help you?
- 14Using an ozone generatorDid this help you?
- 15Sprinkling baking soda, letting it sit overnight, and vacuumingDid this help you?
- 16Used Clorox wipes and all purpose cleanerDid this help you?
- 17Used oxicleanDid this help you?
- 18Used laundry stain removerDid this help you?
- 19Used a mixture of dawn, vinegar, and waterDid this help you?
- 20Applying a homemade 2:1 ratio of cold water to white vinegar with a drop of dish soapDid this help you?
- 21Using Ecostrong's enzyme cleanerDid this help you?
- 22using a Bissel Little Green machineDid this help you?
- 23trying enzyme cleaners like up & up or Biokleen Bac-Out with a wet/dry shop vac and microfiber clothsDid this help you?
- 24Used vanish stain remover and hydrogen peroxide and scrubbed or blot dried.Did this help you?
- 25using Dawn and blottingDid this help you?
- 26The Pink Stuff carpet and upholstery cleanerDid this help you?
- 27Micellar WaterDid this help you?
- 28Brush Clean Pro heavy duty makeup removerDid this help you?
- 29trying an enzyme cleanerDid this help you?
- 30Carpet installers reusing existing tack strips if they are in good conditionDid this help you?
- 31Cleaning with an enzyme cleaner or baking soda and vinegarDid this help you?
- 32Running an ozone generator before paintingDid this help you?
- 33cleaning the surfaceDid this help you?
- 34ripping out the carpets and padDid this help you?
- 35calling a professional remediation companyDid this help you?
- 36scraping and vacuumingDid this help you?
- 37using a snow shovel to push debris into pilesDid this help you?
- 38wearing a respirator mask during cleanupDid this help you?
- 39encapsulating with a product called Perfect PrimerDid this help you?
- 40Using an enzyme cleanerDid this help you?
- 41Applying white vinegar and hot water with baking soda, then vacuumingDid this help you?
- 42Using Woolite carpet cleanerDid this help you?
- 43Using an ozone generator to break down curcumin bondsDid this help you?
- 44Spraying the stained area with borax or boric acidDid this help you?
- 45steam cleaningDid this help you?
- 46vacuumingDid this help you?
- 47Using a mix of Biz laundry powder, warm water, and a wet carpet cleaning machineDid this help you?
- 48Applying household cleaning solutions like Lysol, Dawn dish soap, and hydrogen peroxide-based carpet cleanersDid this help you?
- 49Using Folex and scrubbing the stainDid this help you?
- 50Using a fan to blow-dry the wet spotDid this help you?
- 51Using a Bissell little green carpet cleanerDid this help you?
- 52Applying a mixture of warm water, Dawn dish soap, and rubbing alcoholDid this help you?
- 53Vacuuming dry before applying liquidsDid this help you?
- 54Using dawn and hot waterDid this help you?
- 55Using a handheld oscillating tool with a scraper attachmentDid this help you?
- 56Using a 4-inch handheld scraperDid this help you?
- 57Using a long-handled standing floor scraper like the QEP 8-inch scraperDid this help you?
- 58Using an SDS hammer drill with a 4-inch scraper attachmentDid this help you?
- 59Hiring a professional with a power stretcherDid this help you?
- 60Renting a knee kicker from a hardware store to DIYDid this help you?
- 61Throwing another carpet or area rug over the rippled sectionDid this help you?
- 62Attempting a cut and seam repairDid this help you?
- 63Using a steam ironDid this help you?
- 64Scrubbing with alcohol and standard carpet cleanerDid this help you?
- 65Cutting out the affected patch of carpetDid this help you?
- 66Tearing out all the carpet and padding and replacing itDid this help you?
- 67Hiring a professional for sub-surface extractionDid this help you?
- 68cut as flush as possible with a utility knife and hide it with new flooring and trimDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I'm moving into a house that stinks. I think most of it is pet smell but there might be some smoking smell mixed in as well.”source ↗
“My plan was to remove the carpet myself so I can clean and prime (seal) the floors as needed prior to installing new carpet.”source ↗
“Hi guys, need some tips on how to get rid of this stain, I’ve tried steam cleaning after vacuuming it to no success.”source ↗
“It’s got very old stains, spills, and all sorts, and it looks awful.”source ↗
“We rent, and replacing the carpet isn’t even almost in our budget.”source ↗
“some general dirt-like stains around that actually seemed to get worse after we used the carpet machine a few times.”source ↗
“i’m pretty sure even after they had it professionally cleaned it kind of smells.”source ↗
“anyways i was gonna hire someone to do carpet cleaning but genuinely it’s just right in the door and i own the little green machine from bissel. So does anyone know any good hacks or cleaning solutions that do best.”source ↗
“I've got the worlds most annoying makeup stain on my wool carpet that refuses to come out.”source ↗
“All used to no avail. It doesnt even seem to be diluting when the liquids are added!”source ↗
“Anybody have any advice for how to get rid of this?”source ↗
“My landlord switched our carpet to this material and it's kind of a nightmare.”source ↗
“Accidentally stained my carpet with blue gel nail polish. Any advice on getting the stain out or am I screwed?”source ↗
“Then she told me she had sprayed talc over our carpets and that it’s still there.”source ↗
“I had no idea she’d been using talc, and apparently she’s been doing it for five years.”source ↗
“How bad is the situation, and if it is bad, what can be done to remove the talc?”source ↗
“We already used one of the Bissell little green carpet cleaners and it’s still there. Any suggestions on how we can get it out?”source ↗
“There is an ungodly bad smell of what i would describe as like stale marijuana or bongwater in the carpet. Its making us feel sick and we need some help to remove the smell.”source ↗
“We've tried putting a couple of damprids in the room and used Peerless JAL Attack An Odour to no avail.”source ↗
“The red salsa has stained my rug. I have tried oxiclean, laundry stain remover, and a mixture of dawn/vinegar/water. It is still stained a faint orange color :(”source ↗
“My parents are on vacation and I am pet sitting, and the dog had an accident on the carpet. I have tried resolve, skouts honor and nellies pet stain remover, plus a scope pet solution in a handheld carpet cleaner, what can I try to remove the stain here? The carpet being so thick makes this harder”source ↗
“My dog threw up on this rug a few weeks ago and at the time, all I had on hand was vanish stain remover and hydrogen peroxide.”source ↗
“there is still this dark looking stain on it. It’s been a few weeks now and I haven’t done anything else. Is it too late to try and make it not so obvious?”source ↗
“I can’t replace the rug right now but would love for there to not be such an obvious dark patch.”source ↗
“noo i think it’s because i spilled my drink and fell asleep then woke up in the morning and cleaned it.”source ↗
“i’m just worried about sleeping with it tonight, gonna get on cleaning it first thing in the morning”source ↗
“Please help me 😭. I rent in the Bay area. I've tried folex and woolite.”source ↗
“I started with a general lysol cleaner, then a mix of dawn and warm water, and finally tried some Resolve carpet cleaner that had hydrogen peroxide. There is still a pretty large pink blob. I’m hoping you guys have some ideas…”source ↗
“For context: I’m a broke college student and I rent so I need to fix this to the best of my ability lol”source ↗
“i’ve got a professional carpet cleaner coming saturday. i’ve never had to call a professional, do you think they’ll be able to remove it? 🥹 i agree not a smart choice for a high traffic area! i always have to learn my lessons the hard way :(((”source ↗
“Thank you! It’s sidewalk chalk.”source ↗
“Treated myself to an iced latte and lo and behold, splat all over the carpet.”source ↗
“I tried using laundry detergent and warm water to scrub it but it made it worse.”source ↗
“Cat puked on the carpet on the first night after we bought it. Tried the machine in the picture, laundry detergent, dish soap, nothing’s making it come out… extremely frustrated.”source ↗
“We just purchased this Sisal rug, and of course it’s instant karma that I’ve been so OCD about anyone eating in the living living room that I spilled my pumpkin spice latte all over the rug this morning.”source ↗
“Against better judgment, I cleaned the area with Follex before reading the care instructions.”source ↗
“Not only did I not pat dry, but I scrubbed the spot after I applied the Follex.”source ↗
“This rug was sort of an investment and I feel so bad that I didn’t take care of it better.”source ↗
“Homeowner newbie here. Is re-stretching the only option here? Any work around to not have to clear the room of heavy furniture?”source ↗
“Trying to convert this room into a dog kennel and plan on doing garage epoxy over the floor, I’ve tried dawn and hot water, a handheld oscillating tool which is how I got the pad up, and now I’m left with this. There has to be an easier way.”source ↗
“When I removed the carpet i kicked up a shit ton of this foam dust”source ↗
“the backing breaks down over long periods of time and is supper frustrating on tearout”source ↗
“It literally became dust when exposed. I actually used a snow shovel to push it into piles and load into garbage bags.”source ↗
“I tried a handheld I’m not physically strong enough to get underneath it”source ↗
“That’s what I did this evening, what a daunting task, was hoping there was a solvent or something that would make it easier”source ↗
“I spilled water that went unnoticed until it stated to smell, it saturated an area on the rug and carpet beside my bed.”source ↗
“I tried using alcohol and carpet cleaner but the smell remains, it honestly smells like cat pee.”source ↗
“I’m considering just cutting out the patch because it’s probably bad to breathe but idk what to do”source ↗
Where this came up
People with this problem also raised
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- 9How to get deep embedded dirt out of plush carpet
- 14How to get chemical smells out of carpet
- 19How to get marinara sauce stains out of rubber mats
- 5How to know if hardwood is under carpet before pulling it up