Car care

The Dangers of Self Serve Car Vacuums | Car Cleaning Pitfalls

Panda Hub commissioned a lab study into the microbes lurking on self serve vacuums, commonly found at car washes and gas stations. What we found was nothing short of disturbing.
Written by
Russell Hunter
, Dec 09, 2024

Have you ever seen someone using a self-serve vacuum cleaner to clean their car, and wondered just how dirty the vacuums are? Or have you ever been using one and wondered what other people were using them for? 

To find out just how dirty these vacuums are, the team at Panda Hub conducted an experiment, and surveyed American car owners to see how many people use them… and what we found shocked us.

By Swab testing Self-Serve Car vacuums, Panda Hub’s shocking study has revealed which microbes are being unknowingly wiped all over people’s car interiors.

Keeping your car clean is important, regularly vacuuming your seats and upholstery is all part of a good car cleaning routine. You’ve been in a pinch, or you don’t have a good vacuum at home, it happens. The obvious solution for many is to spend 15 extra minutes at the gas station and vacuum your seats, carpets and trunk.

But is this decision making your car cleaner?

No, it likely isn’t. While you’re cleaning up dust, debris and dirt, you’re likely wiping feces particles all over your seats, floor and trunk. Here’s what we found.

Key Findings - Microbial Lab Analysis of Vacuum Swabs

The following bacteria were found in high amounts on every swabbed self-serve car vacuum:

  • Staphylococcus aureus
  • Pseudomonas aeruginosa
  • Listeria monocytogenes
  • Coliforms (including E. coli)
  • E. coli (pathogenic strains)
  • Bacillus cereus
  • Other unidentified coliforms

These bacteria are responsible for serious sicknesses, and all were found in high amounts. Coliforms in high amounts are indicators of feces residue, which is particularly concerning given they'll be wiped all over people's cars. Listeria and E. coli are dangerous if brought into a food preparation environment, which could easily be transferred from cars to groceries.

Summary By Swab:

Swab Summary - Lab Analysis
Swab Overall Risk Summary Key Risks
Swab A High

Staphylococcus aureus: Potential for MRSA, can cause serious skin and systemic infections.

Pseudomonas aeruginosa: Opportunistic pathogen, dangerous for those with weakened immune systems, can lead to severe respiratory and skin infections.

Listeria monocytogenes: High risk for pregnant individuals and immunocompromised, can cause severe illnesses like listeriosis.

Coliforms (including E. coli): Presence may indicate fecal contamination; further analysis needed to confirm pathogenic strains.

Bacillus cereus: Can lead to rapid-onset food poisoning with vomiting and diarrhea.
Swab B Moderate

Staphylococcus aureus: Present at lower counts, still a concern for skin and wound infections.

Listeria monocytogenes: Moderate risk, particularly for vulnerable groups, associated with foodborne listeriosis.

Coliforms (including E. coli): Presence may indicate fecal contamination; some strains can be pathogenic and cause GI issues.

Bacillus cereus: Potential for foodborne illness, leading to symptoms like nausea and diarrhea.
Swab C Very High

Coliforms (including E. coli): High counts indicate significant contamination; pathogenic strains could cause severe gastrointestinal illness.

Staphylococcus aureus: High counts, posing a risk for serious infections.

Listeria monocytogenes: Significant risk, especially to pregnant women and individuals with weakened immunity.

Bacillus cereus: Food safety concern due to its potential to cause food poisoning.

Pseudomonas aeruginosa: May pose a risk for those with compromised immunity, can lead to severe infections.
Swab D Moderate / High

Listeria monocytogenes: Can cause serious infection, especially in at-risk individuals (e.g., pregnant women, immunocompromised).

Coliforms (including E. coli): Presence may indicate fecal contamination and possible presence of harmful bacteria.

Staphylococcus aureus: Moderate to high risk for wound infections and foodborne illness.

Bacillus cereus: Concern for food safety, associated with foodborne outbreaks.

Pseudomonas aeruginosa: Potential risk for severe infections in vulnerable individuals.
Swab E Low / Moderate

Staphylococcus aureus: Present at lower counts, can cause skin and wound infections.

Coliforms: Presence may indicate contamination; further analysis is needed to determine if pathogenic strains are present.

Bacillus cereus: Low to moderate risk for foodborne illness, can cause vomiting and diarrhea.

Listeria monocytogenes: Present at lower counts but remains a significant concern for vulnerable populations.

E. coli (pathogenic strains): Potential risk for GI issues, indicating possible fecal contamination.

Key Findings - Self-Serve Vacuum Usage from American Car Owners

  • 40% claimed they would be likely to use these vacuums to prepare for Christmas, which amounts to a potential 85 million Americans spreading feces particles, E. coli and Listeria all over their cars right before a big meal.
  • 42% of respondents claimed they would use self-serve car vacuums for daily maintenance, which amounts to a potential 89 million American drivers doing the same thing.
  • Women are less likely to use Self-Serve Car Vacuums to clean their cars, with 39% saying they would almost never use them, in comparison only 22% of Men would almost never use them.

What Should You Do?

Well, we would suggest that if you're able to, that you vacuum your car at home.

Panda Hub's Lead Detailer, Parham Koukia, says "Regular, light vacuuming, even with a handheld vacuum will make a big difference. Make sure to wipe the end of your vacuum attachments down before or after you use them. At home, you could even use a disposable antibacterial wipe, just let them dry before you use them on your car."

Sources

Number of registered American car drivers - Bureau of Transport Statistics

Microbial Swab Analysis - Commissioned by Panda Hub & Conducted by Microchem Lab - ISO 17025 Accredited.

Survey of 500 Car Owners - Commissioned by Panda Hub & Conducted by SurveyMonkey

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