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Gardening: Repelling Pests : How to Repel Bugs With Pennies, Water & Plastic Bags

December 6, 2019

Hi this is Yolanda Vanveen and in this segment
we are going to talk about how to repel bugs with pennies, water, and a plastic bag. Well
a lot of people say it really works and there is actually some scientific evidence that
supports it too. So basically a penny works, the shinier the better and I would just like
to use a few pennies to try it out and just use some water in a plastic bag and you leave
the pennies in there and what you do is you hang the bag from the trees around where you
are eating or you are having your picnic or your barbecue and what it creates is an optical
illusion for us and for bugs and so the bugs when they’re flying around they see all the
prisms coming out from the bag that we don’t really even see as humans and it creates a
no fly zone for them. So they see all these prisms coming out from the bag and they see
the water in the air and they think they’re looking at water so it creates visually a
barrier. So it’s like an invisible wall around your party and apparently there is scientific
proof that it supports the fact that it really works and lots of people have done it. My
only concern is that you don’t want to leave plastic bags hanging in your trees because
there is lots of different animals that might think if it’s fallen to the ground or if it
just starts getting slimy they’ll think it’s food and they’ll swallow it and they’re going
to die. So I really don’t like to leave plastic out in nature because it really isn’t something
that belongs there naturally. So if you are having a party you can try to hang it from
the trees. There are a lot of people that own restaurants that hang it from the trees
and they say it works really well in the patio seating area and it might be visually kind
of confusing but it is real similar to the idea of hanging just a CD, so you can just
hang some old CD’s around your garden too and it will stop birds from coming near it
as well as all types of bugs.


  • Reply get5050 December 4, 2008 at 6:00 pm

    great. Thanks

  • Reply DigiDara May 26, 2011 at 4:39 am

    An old CD would work the same? Does this work for wasps as well because I have a major problem with both in my back yard.

  • Reply mackaldrackar July 7, 2013 at 2:34 pm

    The pennies have nothing to do with it, but yes, it does work. It's the way that light refracts through the water. Flies have thousands of eyes that can pick up images like a mosaic and its brain makes due with that. (The eyes don't move like human eyes). It confuses them (through the water bags) and they leave the area. Houseflies are all I know about… probably not wasps, mosquitoes, or any worms/caterpillars.

  • Reply D J June 3, 2015 at 12:53 pm

    The DERP is strong with this one.

  • Reply Christian Brugmans July 14, 2016 at 7:00 pm

    pennies don't really exist in Canada anymore.

  • Reply franl155 September 5, 2016 at 3:34 pm

    maybe the pennies are just to make it visible to humans and birds that might otherwise walk/fly into them?

  • Reply Iain Botham February 21, 2017 at 11:53 pm

    1:50 If old CD's work just as well, then there's little point in bags of water

  • Reply JohnDoeTheTroll October 30, 2017 at 12:12 am

    This is such bullshit!!! It does NOTHING!!!
    My Dad had this shit hanging all around his house and flies even landed on the bags!!!

  • Reply Desert Rat Gardener May 15, 2018 at 4:08 am

    This works really well with houseflies. But I had no idea wy. Thanks for the explanation of why.

  • Reply Ricardo Lopez June 15, 2018 at 6:43 pm

    This product kills house flies!

    Zepol Labs Mergence Electronic Indoor Fly Trap

  • Reply Lewis Smith July 2, 2018 at 10:45 am

    If you are going to claim that there is scientific evidence you should provide a link to the study you are referencing

  • Reply John Doe July 22, 2019 at 12:32 am

    Wow what a big pile of horse shit she's on.

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