The Dirtiest Things In Your House (You'll Be Surprised!) | Bacteria Experiment
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- Опубликовано: 5 авг 2016
- Here is a link to the agar kit that I used so that you can do yourself! Last I checked it is only 18 dollars.
www.amazon.com/gp/product/B00...
In this video I show you just how dirty common household items are. There are bacteria everywhere! There are about a million bacteria cells per milliliter of water. There is more biomass of bacteria on earth than the combination of all plants and animals. In the video I test common household items to see which items harbor the most bacteria. In my experiment I spread my bacteria samples on tryptic soy agar plates. I sample the kitchen sink, the toilet, iphone, floor, doorknob, remote, mouth, toothbrush, my son’s stuffed animal puppy, and my skin (my armpit and belly button). Then I let them grow for 12 hours, and count the number of CFUs (colony forming units) there are on each plate. I do the same at 24, then 48, then 72 hours. After each time increment I count the number of bacteria colonies. The end results are shown below:
12 hrs 24 hrs 48 hrs 72 hrs
Sink 3 10000 10000 10000
Toilet 1 39 372 600
iphone 0 1 41 74
Floor 0 0 63 97
Doorknob 0 3 11 24
Remote 0 1 1 42
Mouth 0 0 950 1500
Toothbrush 0 0 0 1
Puppy 0 3 96 222
Skin 0 0 1 8
In the end the sink is by far the dirtiest place that was measured. The whole area that was swabbed on the agar plates was completely covered by 24 hours. The next was the toilet. The surprising results were that my skin and my toothbrush were the cleanest out of everything with my toothbrush only having one single colony of bacteria on it in the end.
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Bacteria pictures credit:
www.freepik.com/free-vector/bi... Designed by Freepik 
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I've been always disgusted by the sink! Some people even put fruits, vegetables in it to wash them. I'm in love
Ladies and gentlemen KEEP YOUR TOOTHBRUSH AWAY FROM YOUR TOILET, close the seat before you flush
MaryFaith Mobley i close the toilet when i flush so no problem with me
But the toilet water is so good compared to sink water. Love brushing my teeth with that stuff.
@@animationspace8550 someone gets it. 🤘👍
I know this is silly but I always instinctively dislike sinks! I never ever touch them with my bare hand and when I was younger I used to call it the mother of all dirt! So the results agree with my phobia of sinks!
Hi-5🖐You're not alone XD
You are right!!
ME TOO WHAT?!? I thought I was dumb for thinking that lol
Yay!! I am no longer alone.👍👍😎
I would have to agree with you. I think my disgust of sinks roots from how gross wet food like wasted cereal you leave in the sink and wash down is.
I was always taught in microbiology to keep the lid over the Petri dish at a 45 degree angle so you won’t contaminate it with the germs from the air or mold.
What?
explain?
@@xmipad-rafaelxaverianmulya6084 what he means is you dont open the lid completly if you want to put some bactirial spore or fungi spores. So when you want to innoculate something you open the petri dish but the lid in your hand covering the dish as much as you can and you innoculate the dish that way, in order to not get some unwanted spores from your envoirment. It would be to innoculate under a Still Air Box or Laminar Flow Hood but thats quite expensive. But as always be as clean as possible and the room or envoirment clean as well and "settled air". No AC or windows open because the air will make the spores flow in your room. Sorry for some broken grammar.
I saw where you can carry the objects, when possible, to a sterile table area with a bunsin burner lit to just barely lift the lid off when you swab your q-tip sample to prevent the Air from your mouth & the room from contaminating the sample.
This is fascinating. Im never touching anything again! LOL
I have been wanting to do a very similar experiment with my son, where we would also look at the bacteria under a microscope. I wasn't sure how to go about first collecting the bacteria. You have shown me how. Thanks.
My son loves your channel. Very interesting and I am about to clean everything now! Lol. Especially the sink!!!
Thanks! Yes, this video made me want to wash my hands a lot
I just realized this would have been a great science experiment.
Excellent video! Thanks for taking the time to present your experiment!
oh wow! that was awesome! who knew the kitchen sink would be so dirty!!!!!!!!!!!! loved it!
Thanks!
Thank you! Very insightful. We cannot see does not mean there is no danger.
I'm not at all surprised by the kitchen sink sample being by far the worst. That sad part is that, the majority of people are unaware of this. What really surprised me is the toothbrush result.
Im sure your Wife is glad your body and Tooth brush were winners HAHA..... unless that one colony on the toothbrush was E coli Right? Got to Love Science
Ha, ha. I'm as clean as a whistle!
ok next challenge is to test 10 Whistles and see if any are clean? and they can not be new!!! haha never did understand that saying.
Lol
way awesome video and subject, gotta have talk with my spouse about our sink :)
Good idea!
good work from you buddy.
I’d like to see before and after trying different cleaning products/techniques to see what is most effective at removing bacteria.
Any way to tell the difference between good and harmful? What’s safe?
I always spray clorox foaming bleach cleaner (or it's equiv) on the the surfaces of the sink, counter tops, toilets, showers, bathroom counter tops, etc and let sit for >10 min to obliterate most of the bacteria/fungus/molds, then scrub and rinse and once I am finished cleaning/disinfecting, I spray everything down with Lysol (or it's equiv). I wipe door knobs, phones, fridge door handles, remotes with clorox wipes (or it's equiv). I always mist my toothbrush and hairbrush with 91% alcohol and let them air dry. After I use the bathroom sink- I also mist the sink and faucets with 91% alcohol. It's exhausting to be an OCD inflicted clean freak- this all started of course with my diagnosis of OCD, but what triggered my cleaning mania is taking a college microbiology course. It ruined me! LOL! PS I know I need help :)
Sounds EXACTLY like me!...
College microscopes,, and it is totally exhausting! Esp.in the age of deadly viruses everywhere. Ahh
Thanks for the tips lol going to buy this now
The bathtub on the floor near the drain would be interesting.
Your places is pretty clean!
señor buenas, como hizo para hacer el cuadro para identificar las colonias???????
can you count the number of colonies by hand because i only have 1 sample and i don't have any equipments to count colonies. is it okay to count it by hand? please i need your immediate response thankyou very much
This makes me feel even more respectful and thankful to God for building us such a delicately functioning way. When you have lost faith even in God, think this way, your body is fighting off to let you live 24/7 till you die...
Imagine if he used the same cotton swab for every surface- 💀✋🏼
I kept thinking that too...
Very intense music
I am doing a science project based on this video it is called which household has the most germs and bacteria
Watching this to find motivation to clean 😅 I think it worked
How did you prepare the chart, how the measurement was done?
How did you count all those colonies?
It would be interesting another test to see how many bacterias are on cats or dogs, and on humans hair
What kit did you use to do this
Wow. Did you sanitize your toothbrush!?
do a belt buckle, the computer mouse, steering wheel.
I think that there is a lot of bacteria in your mouth, but the specific species there don’t grow well on Tryptic Soy Agar, and some of them are fastidious, in that they require specific nutrients you would find in your oral cavity. A lot of streptococcal species behave this way, to say the least.
Coronavirus joins the chat!
Actually your sink has more bacteria than your toilet. Feel free to use some dawn dish soap and when done with your dishes, use the remainder of the soap to clean your sink.
Nice job
Where do you get those materials
What about the air, should this not be done in front of a flow Hood / bench?
Yeah. Air always contains bacteria and fungus spores. He should have used a control.
Great to know that my toothbrush is the cleanest in the house cause I put that frigging thing in my mouth
People like filling their sink and washing food in it always grosses me out.
Yeah, but what about the water he wets the swab in?
Could always do a control where you use sterile boiled water for everything and test JUST your boiled water to be sure it is fine too.
The door handle 😮
I worked in a major pharmaceutical company in allergenic extracts. In the clean room with hepa filtered air, positive air flow, and wiping the filling room top to bottom in isopropyl twice each shift they sometimes STILL found bacteria. The QC
people would swab door handles, doors, windows, and equipment touched by personnel. They also would swab places out of reach like the ceiling, above the door jamb, STILL they found bacteria maybe once a week. If a clean room has bacteria, everything in your home has it. Now do a video on dust mites and other evil things lurking in your home. Its worse than you think. And the creatures living off your skin. Our crew watched a video on bacteria an a co-worker threw up. I almost did.
btw the most bacteria infected thing in the bathroom is the toilet paper
fastest growing doesnt mean nastiest, bacteria grows super fast and mold spores can take a few days to germinate
Eww. This is why I scrub my sink with bleach 2-3 times a week.
You are probably poisoning yourself like that
Love it
Do more bacteria means dirtier?
When the thing you clean your dishes in is dirtier than the toliet
That's mainly because sinks collect the oils and nutrients of foods. Plus the water being present helps them grow.
Wait.... action lab had a vlog channel?
did you use your same toothbrush every day? would that not mess up the experiment?
I only took the sample on the first day for all specimens, so it didn't matter that I continued to use my toothbrush afterwards because the sample had already been taken at that point.
Hi. If I may ask where did you bought the tryptic soy agar kit?
ebay sells agar agar and petri dishes
you should pour your own its super simple but people sell pre poured plates on ebay etsy amazon etc
Where I have that pen which ur using
How does it grow that big ?
how did you measure the amount of bacteria in each petri dish?
He literally said in the video
Informative! I always spray bleach in my sink and on counter tops.
You stopped uploading more videos?
Do you use the agar or not
This is an interesting test but you did not use sterilized water ( and it should also be saline water to not cause a shock to the bacteria), I also think the way you spread the bacteria on the agar plate is not representative of the surface.
But it is a fun experiment just to get a little idea of what is growing in your house :)
I believed that you're supposed to keep the sodium levels as low as possible in this type of experiment... as salt hinders bacterial growth. Which is true? I want to try this, but I want to do it right
Hmmmm....someone should consult with a microbiology professor at the closest college. The internet and people on the internet are not the best to seek advise from unless they have thorough knowledge of the topic.
j money Microbiology Student here.
It depends on the type of bacteria you are looking for. Some bacterial genera like staphylococcus like having high salt levels, so to isolate them, we use a type of agar called Mannitol Salt Agar instead of the Tryptic Soy Agar you see in the video. In fact, when you pickle things, all you are really doing is just creating a favorable environment for certain bacteria that you want to ferment your food while making an environment unfavorable for bacteria that spoil it.
In general, you may want to use a low saline solution, since using distilled water can be too hypotonic for the bacteria, but you would want some amount of salt.
Check for mold
fridge handle
I have an phobia of public bathrooms and the sink is the worse disgusting when I go to a public bathroom I tinkle then I'm out then I get my own handzitizer
Who else is doing this for a science fair project???
Not me
Disinfect your sink with peroxide, vinegar with baking soda, lemon. Goggle it like the video.
I think you should have put the Q-Tip on your hand! The hand touches the most, so is the most gross
Hopefully not as you should be washing them regularly. Before and after toilet, before eating, after touching pets, after changing diapers or doing dirty chores like laundry etc.
Is this Fran’s Drescher’s son
don't open the petri dish or you will be very ill
So I am writing here, because I thaught you maybe see my message here. Here you do not have so many followers and views on your vids so maybe you recognise me.
I have a Idea for your Vacuum chamber:
Laserlight produces heat when it collides with solid molecules i guess. So if you glow with a laser in air you maybe seeing a warm line through a heat-detecting-camera (wärmebildkamera in german). This is because of particles and molecules in the air.
So what if you did this in the vacuum chamber? There are as less particles as possible which would produce heat when they get shined on. But there are none. So would you see the warm line through the heat-detecting-camera(german: wärmebildkamera)?
I would like to test this out but i have not the supplies to do it;) thank you and much fun
Somebody did this with a kids hand and it was the same shape and size
Ok why don't you have a microscope
Well he got the drain not the sink. I know that the drain is super disgusting because it's extremely hard to clean.
The dirties thing in the house are the wet sponge and cloth next to the sink. Yuk.
Do mc Donald's play things
it's one week
Can touching the bacteria harm me?
no
Liar your sink is not freshly clean..... And why did you swab the drain area and not the surface area????
probably because the drain would have more bacteria so the results are more shocking and therefore better for views and stuff
Now you gotta wonder how is it we can live among billions of bacteria and mold, could it be possible we as humans and bacteria have alot in common? I mean it's not killing us all the time like each other are doing , and maybe germs and bacteria and mold play a big part in evolution chain.? Just saying people no hate here.
Anyone else watching this for school?
Me
I'm put beach on my sink
I DON'T LIKE THE TOILET IT'S SO DISCUSTING
gloves.......
Played it in 1.25x
Way better
only one
Well I got more power to move you to as well
You may want to buy a new toothbrush. Yours here looked worn out and I can tell that you brush your teeth hard. This is based on the the spread of the bristles.
Great video. Thank you for sharing!
God Bless!
I lick sinks. And toilets
You must have a strong immune system
Why aren't you wearing gloves while doing this test..? jw
My moneys on the toothbrush
is this dude on medication? anti depressives? he looks funny...
Fake news