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natural ant repelant ideas wanted

 
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Hello all.

I am in the process of buildiing a Hobbit Home.
Basicly a covered basement with a post and beam roof, covered in dirt.
My question for everyone, is this....

Is there a spice or a food item, when ground up - will deter ants and or chewing insects ?

My line of thought is, I when I am layering on the different layers of roofing material and waterproofing, would it stop or deter chewing insects, if (as an example) I put in a heavy sprinkling of cyan pepper under the last layer of water proofing membrane - would it stop the little critters ?

What about other powerfull spices?  Garlic powder ?  The space in between the layers is supposed to be a dry and stable environment, so it would not wash away...
 
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Lemon will repel ants. You can slice it and just it along the opening and it should deter them. If the space will be dry then maybe DE to help with anything that has an exoskeleton. Good luck
 
pollinator
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I remember reading somewhere that borax could act to repel ants.  I used some of this in my own hobbit hole art studio for basically the same reasons you are thinking.  Did it work?  Hard to say.  I probably could have used more.  I was sprinkling some in the straw bales I was then wrapping in plastic and burying for insulation.  I've still had ants inside.  In fact a couple times over the years I've had swarms of the flying male drones coming out inside!  On the other hand as far as I can tell the buried straw bale insulation has not gotten wet and decomposed.  I also haven't had any issues with leaks and it's been over 10 years now.

The idea of DE in a dry section between layers of plastic sounds like a good one to me.  I recently used it in my house for ants that were invading the fridge!  I tried this in the past without much success, but I don't think I was using enough of it.  This time I've made a small berm of the stuff completely encircling the fridge.  It looks odd, but stopped the ant infestation pretty much immediately.  I remember when I bought my bag it wasn't that much more to jump up to the 50lb bag size, so this is what I got.  I now have plenty of it to be able to use generously.  If you used it on your Hobbit Home I'd use generous quantities too.

Metalsmithing-studio-2.JPG
My Hobbit Hole art studio.
My Hobbit Hole art studio.
 
Dave Lot
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Thank you for the replies...

Will have to look into getting a big bag of DE
 
pollinator
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I have ants every spring that like to come in a visit my apartment.  Mine is a basement apt. and the ground comes up about half way up the walls, so I always have fun little creatures that like to come inside.  I use peppermint essensial oli.  in a little vinegar and water. Sometimes I add a little castile soap or some oregano or lavender oil.  I do have to reuse this every few days. but then I have not really tried to completely get rid of them.  You could try planting mint and other herbs.   I really only have trouble in the spring when they are wanting to expand. Once I convince them this is not the place to do so the rest of the year is not bad.  
 
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