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Getting Rid of Worm Bin Mites

This isn’t technically a reader question, but I thought it would be very helpful to post it. Kristen has been frustrated with her abundance of mites – specifically the ones crawling out of the bin and piling up on the floor. After not being able to find any solutions online she decided to take matters into her own hands.

Hey there! I LOVE your website and find it very helpful and
informative! Thank you for putting so much effort into keeping it
updated and interesting =)

I have an almost – 3 month old worm bin that I’ve made from a big
rubbermaid container and about 3 weeks ago noticed that sawdust type
stuff all around my bin that has been mentioned here before. I assume
they were dead white mites from what I’ve been reading around. Well, I
hear they are not dangerous to the bin, BUT, although I can handle the
idea of worms living under my sink, having to vacuum piles of dead
bugs daily just rubs me the wrong way. There aren’t many solutions I
could find for this issue and since my worms all seem very happy and
healthy I didn’t want to go picking through the bin and start it over
already, so I figured if they really weren’t a health issue I would
just contain them so I didn’t have to deal with them. . .

I had pet hissing cockroaches for a few years and abosolutely loved
having them around. They are very smart and can climb glass and they
can then even push the top up on the tank to free themselves. I
learned that if you smear vasoline around the top of their tank, about
an inch wide, they can not keep their traction and slide down so there
is no way for them to reach the actual top of the tank to escape. It
would have to be reapplied every once in a while because it’d dry out
and they would keep testing it to see if it was gone. . Soo . . I
applied this method to the worm bin hoping that the worms would not be
affected if they touched the vasoline if they tried to esape. 1st I
wiped the inside of the bin that wasn’t covered up with paper scraps
so I got rid of most of the mites I could see, then I smeared the
vasoline about an inch wide around the whole top of the bin. I also
dug down a little bit and wiped some around the ventilation holes
since that mite-dust was coming out of those also.
I had stopped feeding my worms for about a week to let them really
work on the food that was in there so hopefully that wouldn’t be the
issue that was inviting these pesky mites. So I figured they were
hungry by then so I dumped in some food, covered it all up and fast
forward 3 days later and my mite issues seemed to have just about
dissapeared! There is no more mite dust to clean up, and there is just
a minimum of mites inside the bin! yay!
so, I’m not sure if somthing I did was the solution to my problem, or
if it just was by chance they are gone, but I thought I’d get your
take on the whole vasoline idea and maybe it can be offered to anyone
looking for something to try when they have to be living so close to
their worm bin and don’t want dead bugs to be piling up all around it.

Hi Kristen!
Thanks for sharing that. Very interesting.
In all honesty, I would normally be a little worried about the idea of smearing vaseline on the inside of my worm bins – oily substances like that can coat the worms’ skin essentially suffocating them. It does however sound like an intriguing way to trap (or at lease impede) mites, and once your worms are well settled in (not crawling up the sides as much) this shouldn’t cause too much harm. Perhaps they wouldn’t even go near the stuff anyway.

I’d be interested to hear if anyone else has come up with ways (that actually work) to get rid of mite infestations. I tend to be pretty easy going about various worm bin creatures, but I know there are a lot of people out there who feel otherwise.

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Written by Bentley on June 4th, 2008 with 10 comments.
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10 comments

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Get your own gravatar by visiting gravatar.com Sherry
#1. June 7th, 2008, at 1:43 AM.

I can’t seem to get rid of the brown mites in my bin. I’ve taken it outside in the sun, put lots of dry bedding in, withheld feeding for a number of days. I also put cantaloupe rinds and avocado halves in as bait. Bread slices don’t seem to attract them much.

The thing that puzzles me, is that I wait till the food is pretty much or completely used up before feeding. There’s no liquid in the bin, and the castings are really light and fluffy. There are also lots of cocoons. Yet I have mites. They aren’t crawling on the sides, but they are crawling all over the top of the bedding. The lids of the Rubbermaid bins are usually propped open a bit (hinged lid) or set ajar on the snap lid.

Since the worms don’t talk, I don’t know if they are stressed or not, but I know I am.

I’m open to ideas, short of flaming them with a torch.

Get your own gravatar by visiting gravatar.com Eve
#2. July 6th, 2008, at 11:29 AM.

Hi Bentley

I think this is another bug solution.

While its still to early to know if i have a permanent fix this is working as a quick fix.

My bin is now two months old and i just had my first bug explosion. White mites and fruit flies.

Now that the garden is coming around I recently have started adding a lot of fresh garden produce along with too much store bought fruit, especially watermelon. The watermelon was gone just the rinds are left so it is getting ate. But the rind and everything else was covered with mites.

I went from having a few drips of liquid to over 3 inches in the bottom of the outer bin in just a couple weeks. For the first time my bin was getting smelly and mites were everywhere, up the sides and coming out air the holes. And fruit flies were all over the house, a cloud of them escaped when i opened the lid. i don’t think that the smell of bin was so bad that it was sour but it was starting to go that way.

I decided my first step should be to get rid of the stinky liquid so i separated the bins and dumped and washed out the bottom drip bin. I then took the opportunity to drill a few more air holes I decided not to turn it upside down so i carefully drilled them couple inches above the bottom of the worm bin.

I noticed that the fruit flies were landing on the top edges of all the highest points in the bin so I then added a sticky fly trap into the bin. One of those cheap cardboard roll things with plastic ends made for house flies. I just laid it on top of a couple sets of inverted egg crate pieces making it the highest thing inside the bin and closed the lid.

Checking again tonight most the mites were back down in the bedding just a few on the sides of the bin and i had an amazing amount of fruit flies stuck onto the fly trap. The smell did improve a lot by just cleaning out the drip tray, already the scent inside the bin is improving.

Another thing i should note is that by using the double bins the mites that got out of the bin never ended up on the floor. They ‘fell’ into the outer bin. A nice plus when considering what type of bin system to use.

Eve

Get your own gravatar by visiting gravatar.com Bentley
#3. July 13th, 2008, at 3:56 AM.

Great, Eve – thanks for sharing! 8)
(sorry for the delay responding)

B

Get your own gravatar by visiting gravatar.com Eirien
#4. June 2nd, 2010, at 5:00 PM.

Hello Bentley and others!

I just started up a double bin last month and unfortunately have had an explosion of mites. I’ve found most of them crawl right over thick layers of petroleum jelly and watermelon rinds don’t entice them at all!

Currently I’ve gone down to a single bin and am using masking tape along the edging. So far it’s working well. I’m also going to try vinegar traps in the near future.

While I don’t like the thought of killing en masse, I’m really getting nervous about the idea they could be leaving the bin and exploring the house!

Get your own gravatar by visiting gravatar.com schalk
#5. September 5th, 2010, at 5:45 PM.

Hi,

i also have problems with mites in my bin many say cantalope, or even watermelon, but we don’t get watermelons this time of year
do you have any idea? anything will do…….

thanx, schalk

Get your own gravatar by visiting gravatar.com Eirien
#6. September 7th, 2010, at 10:33 PM.

I just wanted to update my mite issue.

I’ve come to accept mites as being normal in a healthy bin. I keep the lid off to reduce moisture on the walls/lid and use a line of masking tape on the top rim to stop exploring mites.

Refresh tape every few weeks, esp right before a good compost turning as mites will explore everything right after.

Get your own gravatar by visiting gravatar.com Sharon
#7. September 27th, 2010, at 3:21 AM.

Hi,
I have found a great way to “catch” the annoying fruit flies is to put a small amount of apple cider with a couple of drops of dishwashing fluid in a small dish or cup (stirred well) works wonderfully. I set it right next to my compost holder and voila many fruit flies end up in the liquid. Also saw on tv another version of same technique is to put apple cider in a bowel and cover with plastic wrap with holes poked in using toothpicks. Fruit flies get in but can’t get out (for some reason) and they said that worked too but haven’t tried as the way I have been doing it works fine.

Get your own gravatar by visiting gravatar.com Gage
#8. November 4th, 2010, at 11:29 PM.

I have had my bin set up for about two months and had an explosion of mites. I got my worms from unclejims so I called and asked about the proplem and they said eventually the mites will go after the worms! they told me to use raid home and graden spray to kill the mites and that it wont hurt my worms. they said to lightly mist the areas where most of the mites are.

Get your own gravatar by visiting gravatar.com Xenia
#9. May 18th, 2011, at 2:56 PM.

From reading these blogs it is my understanding that mites in my worm bin are (1) common, (2) not harmful to the worms, and (3) difficult to get rid of. However, following on my last point, I question whether it’s ok to use the vermicompost on my garden and indoor plants. I am concerned about introducing mites to my plants. Can anyone advise? Thanks in advance.

Get your own gravatar by visiting gravatar.com Eirien
#10. May 19th, 2011, at 11:09 PM.

Xenia, if you don’t want the bugs in your indoor plants then scoop the soil into a baggie or bin and freeze it overnight. Let it thaw and use.

You could also microwave, bake or boil it but I’m assuming the more you muck with it the more it loses its potency. Freezing is also easier as it doesn’t stink up the house nor tarnish your cookware. :P

Either way, imho even prepped compost is a far better natural fertilizer than any regular commercial ones I’ve seen at my garden centres. G’luck!

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