Said It Here

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.

Overview
People affected26 accounts across 5 forums
Workarounds found68 items attempted
Community agreement71 total upvotes

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.

68 items+ Contribute

Found another way around this?

Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.

  1. 1
    Using Folex carpet cleaner
    3 people mentioned
    Did this help you?
  2. 2
    hiring professional carpet cleaners
    2 people mentioned
    Did this help you?
  3. 3
    Using a carpet cleaner machine with a home mix of water and soap
    Did this help you?
  4. 4
    Flushing the carpet with just water
    Did this help you?
  5. 5
    Using rubbing alcohol and cotton rounds
    Did this help you?
  6. 6
    Using acetone soaked after rubbing alcohol
    Did this help you?
  7. 7
    Pinching the stain to lift it rather than rubbing
    Did this help you?
  8. 8
    Cutting fibers from a closet to patch the damaged area
    Did this help you?
  9. 9
    Using damp rid containers
    Did this help you?
  10. 10
    Applying Peerless JAL Attack An Odour
    Did this help you?
  11. 11
    Smoking a cigarette in the same room
    Did this help you?
  12. 12
    Opening windows for airflow
    Did this help you?
  13. 13
    Shampooing the carpet
    Did this help you?
  14. 14
    Using an ozone generator
    Did this help you?
  15. 15
    Sprinkling baking soda, letting it sit overnight, and vacuuming
    Did this help you?
  16. 16
    Used Clorox wipes and all purpose cleaner
    Did this help you?
  17. 17
    Used oxiclean
    Did this help you?
  18. 18
    Used laundry stain remover
    Did this help you?
  19. 19
    Used a mixture of dawn, vinegar, and water
    Did this help you?
  20. 20
    Applying a homemade 2:1 ratio of cold water to white vinegar with a drop of dish soap
    Did this help you?
  21. 21
    Using Ecostrong's enzyme cleaner
    Did this help you?
  22. 22
    using a Bissel Little Green machine
    Did this help you?
  23. 23
    trying enzyme cleaners like up & up or Biokleen Bac-Out with a wet/dry shop vac and microfiber cloths
    Did this help you?
  24. 24
    Used vanish stain remover and hydrogen peroxide and scrubbed or blot dried.
    Did this help you?
  25. 25
    using Dawn and blotting
    Did this help you?
  26. 26
    The Pink Stuff carpet and upholstery cleaner
    Did this help you?
  27. 27
    Micellar Water
    Did this help you?
  28. 28
    Brush Clean Pro heavy duty makeup remover
    Did this help you?
  29. 29
    trying an enzyme cleaner
    Did this help you?
  30. 30
    Carpet installers reusing existing tack strips if they are in good condition
    Did this help you?
  31. 31
    Cleaning with an enzyme cleaner or baking soda and vinegar
    Did this help you?
  32. 32
    Running an ozone generator before painting
    Did this help you?
  33. 33
    cleaning the surface
    Did this help you?
  34. 34
    ripping out the carpets and pad
    Did this help you?
  35. 35
    calling a professional remediation company
    Did this help you?
  36. 36
    scraping and vacuuming
    Did this help you?
  37. 37
    using a snow shovel to push debris into piles
    Did this help you?
  38. 38
    wearing a respirator mask during cleanup
    Did this help you?
  39. 39
    encapsulating with a product called Perfect Primer
    Did this help you?
  40. 40
    Using an enzyme cleaner
    Did this help you?
  41. 41
    Applying white vinegar and hot water with baking soda, then vacuuming
    Did this help you?
  42. 42
    Using Woolite carpet cleaner
    Did this help you?
  43. 43
    Using an ozone generator to break down curcumin bonds
    Did this help you?
  44. 44
    Spraying the stained area with borax or boric acid
    Did this help you?
  45. 45
    steam cleaning
    Did this help you?
  46. 46
    vacuuming
    Did this help you?
  47. 47
    Using a mix of Biz laundry powder, warm water, and a wet carpet cleaning machine
    Did this help you?
  48. 48
    Applying household cleaning solutions like Lysol, Dawn dish soap, and hydrogen peroxide-based carpet cleaners
    Did this help you?
  49. 49
    Using Folex and scrubbing the stain
    Did this help you?
  50. 50
    Using a fan to blow-dry the wet spot
    Did this help you?
  51. 51
    Using a Bissell little green carpet cleaner
    Did this help you?
  52. 52
    Applying a mixture of warm water, Dawn dish soap, and rubbing alcohol
    Did this help you?
  53. 53
    Vacuuming dry before applying liquids
    Did this help you?
  54. 54
    Using dawn and hot water
    Did this help you?
  55. 55
    Using a handheld oscillating tool with a scraper attachment
    Did this help you?
  56. 56
    Using a 4-inch handheld scraper
    Did this help you?
  57. 57
    Using a long-handled standing floor scraper like the QEP 8-inch scraper
    Did this help you?
  58. 58
    Using an SDS hammer drill with a 4-inch scraper attachment
    Did this help you?
  59. 59
    Hiring a professional with a power stretcher
    Did this help you?
  60. 60
    Renting a knee kicker from a hardware store to DIY
    Did this help you?
  61. 61
    Throwing another carpet or area rug over the rippled section
    Did this help you?
  62. 62
    Attempting a cut and seam repair
    Did this help you?
  63. 63
    Using a steam iron
    Did this help you?
  64. 64
    Scrubbing with alcohol and standard carpet cleaner
    Did this help you?
  65. 65
    Cutting out the affected patch of carpet
    Did this help you?
  66. 66
    Tearing out all the carpet and padding and replacing it
    Did this help you?
  67. 67
    Hiring a professional for sub-surface extraction
    Did this help you?
  68. 68
    cut as flush as possible with a utility knife and hide it with new flooring and trim
    Did this help you?
Tried another approach not listed above?+ Share your workaround ↑

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.

r/HomeImprovement1 person · September 2026

“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 ↗

MMinjin · r/HomeImprovement · 17 upvotes
r/CleaningTips17 people · September 2026 – October 2026

“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 ↗

Cooltrigger610 · r/CleaningTips · 7 upvotes

“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 ↗

Existing_Purpose5049 · r/CleaningTips · 3 upvotes

“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 ↗

Just-Reality-8016 · r/CleaningTips · 3 upvotes

“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 ↗

whodathunkitwasme · r/CleaningTips · 3 upvotes

“Accidentally stained my carpet with blue gel nail polish. Any advice on getting the stain out or am I screwed?”source ↗

Pretty-Bid-2560 · r/CleaningTips · 2 upvotes

“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 ↗

unknown5658 · r/CleaningTips · 2 upvotes

“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 ↗

crichins12 · r/CleaningTips · 2 upvotes

“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 ↗

Advance_Educational · r/CleaningTips · 1 upvotes

“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 ↗

bigbluenation20 · r/CleaningTips · 1 upvotes

“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 ↗

RainyTreeDuckOperato · r/CleaningTips · 1 upvotes

“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 ↗

Beans_the_II · r/CleaningTips · 1 upvotes

“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 ↗

Reasonable_Way_7455 · r/CleaningTips · 1 upvotes

“Please help me 😭. I rent in the Bay area. I've tried folex and woolite.”source ↗

way2muchtym · r/CleaningTips · 1 upvotes

“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 ↗

RiverRocks300 · r/CleaningTips · 1 upvotes

“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 ↗

Embarrassed_Union771 · r/CleaningTips · 1 upvotes

“Thank you! It’s sidewalk chalk.”source ↗

crichins12 · r/CleaningTips · 1 upvotes

“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 ↗

Alternative-Sense-63 · r/CleaningTips

“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 ↗

dpolhatehate · r/CleaningTips

“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 ↗

Embarrassed_Union771 · r/CleaningTips
r/Flooring6 people · September 2026 – October 2026

“Homeowner newbie here. Is re-stretching the only option here? Any work around to not have to clear the room of heavy furniture?”source ↗

Great_Television6811 · r/Flooring · 7 upvotes

“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 ↗

Internal_Skill8128 · r/Flooring · 5 upvotes

“When I removed the carpet i kicked up a shit ton of this foam dust”source ↗

Direct-Type-3611 · r/Flooring · 2 upvotes

“the backing breaks down over long periods of time and is supper frustrating on tearout”source ↗

Remarkable-Guess1823 · r/Flooring · 2 upvotes

“It literally became dust when exposed. I actually used a snow shovel to push it into piles and load into garbage bags.”source ↗

HeadMelon · r/Flooring · 1 upvotes

“I tried a handheld I’m not physically strong enough to get underneath it”source ↗

Internal_Skill8128 · r/Flooring · 1 upvotes

“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 ↗

Internal_Skill8128 · r/Flooring · 1 upvotes

“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 ↗

Organic_Yam2213 · r/Flooring · 1 upvotes
r/HomeMaintenance1 person · October 2026

“Ripping out all the carpet in my home and a portion of it in under the wall.”source ↗

“Is my only option to cut as flush as possible with a utility knife and hide it with new flooring and trim?”source ↗

xv_Picori_Blade · r/HomeMaintenance · 2 upvotes
r/cats1 person · September 2026

“My roommates cat threw up on my rug is shaggy so it’s kinda hard to clean/not easy to see if something is on it.”source ↗

“I cannot get the smell out of living room. It’s very subtle but when I’m sitting on my couch it’s all I can smell.”source ↗

Apprehensive_War6661 · r/cats · 1 upvotes

Where this came up

People with this problem also raised