Discussion:
OT - But Relevant: Bug Zappers
(too old to reply)
Peter Wieck
2019-03-18 17:02:45 UTC
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Now that Spring is about to Spring in 2.2 days, and given that other-than-cats subjects are fair game; Please look at the information below. Please note that songbirds, bats and vast sections of our ecosystem depend on beneficial insects for proper survival.



https://www.mosquito.org/page/faq



Do Bug-Zappers work?
Black light insect electrocution devices (Bug Zappers, etc.) are purchased in huge quantities by homeowners due to their demonstrated ability to attract and kill thousands of insects over a 24 hr. period. One industry representative estimates that over 1.75 million of these devices are purchased annually in the U.S. But do they really control pest insects? Bug zappers do indeed kill some mosquitoes. However, the only two controlled studies conducted to date by independent investigators at the University of Notre Dame showed that mosquitoes comprised merely 4.1% and 6.4% respectively of the daily catch over an entire season. Even more important was the finding in both studies that there was no significant difference in the number of mosquitoes found in yards with or without bug zappers. What is particularly disconcerting, however, is the number of non-pest insects that comprise the vast majority of trap catch. Many of these insects are beneficial predators on other insect pests. They in turn constitute a major part of the diet of many songbirds. Indeed, reduced numbers of moth and beetle prey species have contributed significantly to the decline of songbird populations in many affluent suburbs. Insect electrocution devices undoubtedly bear some responsibility for this phenomenon. Mosquitoes continue to be more attracted to humans than to the devices. One study conducted in homeowners' backyards showed that of the insects killed by these devices, only 0.13% were female mosquitoes. An estimated 71 billion to 350 billion beneficial insects may be killed annually in the United States by these electrocuting devices.

Let your conscience be your guide.
John Robertson
2019-03-18 17:32:56 UTC
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Post by Peter Wieck
Now that Spring is about to Spring in 2.2 days, and given that other-than-cats subjects are fair game; Please look at the information below. Please note that songbirds, bats and vast sections of our ecosystem depend on beneficial insects for proper survival.
https://www.mosquito.org/page/faq
Do Bug-Zappers work?
Black light insect electrocution devices (Bug Zappers, etc.) are purchased in huge quantities by homeowners due to their demonstrated ability to attract and kill thousands of insects over a 24 hr. period. One industry representative estimates that over 1.75 million of these devices are purchased annually in the U.S. But do they really control pest insects? Bug zappers do indeed kill some mosquitoes. However, the only two controlled studies conducted to date by independent investigators at the University of Notre Dame showed that mosquitoes comprised merely 4.1% and 6.4% respectively of the daily catch over an entire season. Even more important was the finding in both studies that there was no significant difference in the number of mosquitoes found in yards with or without bug zappers. What is particularly disconcerting, however, is the number of non-pest insects that comprise the vast majority of trap catch. Many of these insects are beneficial predators on other insect pests. They in turn constitute a major part of the diet of many songbirds. Indeed, reduced numbers of moth and beetle prey species have contributed significantly to the decline of songbird populations in many affluent suburbs. Insect electrocution devices undoubtedly bear some responsibility for this phenomenon. Mosquitoes continue to be more attracted to humans than to the devices. One study conducted in homeowners' backyards showed that of the insects killed by these devices, only 0.13% were female mosquitoes. An estimated 71 billion to 350 billion beneficial insects may be killed annually in the United States by these electrocuting devices.
Let your conscience be your guide.
I appreciate these notices. My wife and I are retiring our zapper and
telling our friends to do likewise. I wonder if zappers could be
re-purposed as bird feeders - after removing all electrics of course!

House cats? Keep them locked up please, just like dogs they should not
roam
Peter Wieck
2019-03-18 18:20:35 UTC
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Post by John Robertson
House cats? Keep them locked up please, just like dogs they should not
roam freely in cities or suburbs.
We have a cat-fenced side yard, about 50 x 20 feet including a roofed veranda ('fancy' for a side porch). The two cats and two dogs use the pet-door freely, but their area of predation is limited. None the less, the four of them have brought mice, voles, rabbits and squirrels on a regular basis. Only one bird, so far - that being an English sparrow. I question the viability of any animal that will find its way into an area with four possible predator animals, no food source and no effective shelter.

On the other hand, the hummingbirds drive the cats nuts each spring and mid-summer. They (the cats) are long-hairs, and the hummers regularly dive-bomb them for bits of fur for their nests. Lest there be a disaster, we have taken to brushing the cats out every so often, and leaving the furballs outside. Gone, usually, in a matter of hours. There seems to be no interest in the dog hair. Golden and Scottie.

Peter Wieck
Melrose Park, PA
jsowers
2019-03-19 17:10:23 UTC
Permalink
Post by Peter Wieck
Post by John Robertson
House cats? Keep them locked up please, just like dogs they should
not roam freely in cities or suburbs.
We have a cat-fenced side yard, about 50 x 20 feet including a roofed
veranda ('fancy' for a side porch). The two cats and two dogs use the
pet-door freely, but their area of predation is limited. None the
less, the four of them have brought mice, voles, rabbits and squirrels
on a regular basis. Only one bird, so far - that being an English
sparrow. I question the viability of any animal that will find its way
into an area with four possible predator animals, no food source and
no effective shelter.
On the other hand, the hummingbirds drive the cats nuts each spring
and mid-summer. They (the cats) are long-hairs, and the hummers
regularly dive-bomb them for bits of fur for their nests. Lest there
be a disaster, we have taken to brushing the cats out every so often,
and leaving the furballs outside. Gone, usually, in a matter of hours.
There seems to be no interest in the dog hair. Golden and Scottie.
Peter Wieck
Melrose Park, PA
I bought a bug zapper about 25 years ago and all it got on the first
night was a pile of ladybugs. A depressing sight since I had a rose
garden nearby. It went back to Lowe's the next day.

Peter, have you ever seen the nests of your hummingbirds, made from cat
hair? They would be interesting to see.
Peter Wieck
2019-03-19 18:17:03 UTC
Permalink
Post by jsowers
Peter, have you ever seen the nests of your hummingbirds, made from cat
hair? They would be interesting to see.
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They are quite tiny. Ruby-throated hummers (what we have) use a lot of spider silk for adhesives, and anything they can find soft for the actual bedding. On two occasions, we have rescued hummers from spider-webs, they are actually quite tolerant of being handled and when released often hover around a bit before leaving. Is it gratitude? Doubtful, maybe just a bit of thanks.

I know where they nest around here, but the locations are high and tenuous in terms of a controlled approach.

However, I will check this spring with the robin that nests in our honeysuckle in the back, and the cardinal that nests in our flowering tree in front. Both of these use fluff and fur in nest-building. By now, they know who we are, and are pretty fearless.

Peter Wieck
Melrose Park, PA

Bruce Hagen
2019-03-18 19:53:44 UTC
Permalink
Post by Peter Wieck
Now that Spring is about to Spring in 2.2 days, and given that other-than-cats subjects are fair game; Please look at the information below. Please note that songbirds, bats and vast sections of our ecosystem depend on beneficial insects for proper survival.
https://www.mosquito.org/page/faq
Do Bug-Zappers work?
Black light insect electrocution devices (Bug Zappers, etc.) are purchased in huge quantities by homeowners due to their demonstrated ability to attract and kill thousands of insects over a 24 hr. period. One industry representative estimates that over 1.75 million of these devices are purchased annually in the U.S. But do they really control pest insects? Bug zappers do indeed kill some mosquitoes. However, the only two controlled studies conducted to date by independent investigators at the University of Notre Dame showed that mosquitoes comprised merely 4.1% and 6.4% respectively of the daily catch over an entire season. Even more important was the finding in both studies that there was no significant difference in the number of mosquitoes found in yards with or without bug zappers. What is particularly disconcerting, however, is the number of non-pest insects that comprise the vast majority of trap catch. Many of these insects are beneficial predators on other insect pests. They in turn constitute a major part of the diet of many songbirds. Indeed, reduced numbers of moth and beetle prey species have contributed significantly to the decline of songbird populations in many affluent suburbs. Insect electrocution devices undoubtedly bear some responsibility for this phenomenon. Mosquitoes continue to be more attracted to humans than to the devices. One study conducted in homeowners' backyards showed that of the insects killed by these devices, only 0.13% were female mosquitoes. An estimated 71 billion to 350 billion beneficial insects may be killed annually in the United States by these electrocuting devices.
Let your conscience be your guide.
There is no question that they kill a lot of mosquitoes. In my case the device is placed a good 40 ft from our main sitting area.

BH
John Robertson
2019-03-18 21:30:43 UTC
Permalink
Post by Bruce Hagen
Post by Peter Wieck
Now that Spring is about to Spring in 2.2 days, and given that other-than-cats subjects are fair game; Please look at the information below. Please note that songbirds, bats and vast sections of our ecosystem depend on beneficial insects for proper survival.
https://www.mosquito.org/page/faq
Do Bug-Zappers work?
Black light insect electrocution devices (Bug Zappers, etc.) are purchased in huge quantities by homeowners due to their demonstrated ability to attract and kill thousands of insects over a 24 hr. period. One industry representative estimates that over 1.75 million of these devices are purchased annually in the U.S. But do they really control pest insects? Bug zappers do indeed kill some mosquitoes. However, the only two controlled studies conducted to date by independent investigators at the University of Notre Dame showed that mosquitoes comprised merely 4.1% and 6.4% respectively of the daily catch over an entire season. Even more important was the finding in both studies that there was no significant difference in the number of mosquitoes found in yards with or without bug zappers. What is particularly disconcerting, however, is the number of non-pest insects that comprise the vast majority of trap catch. Many of these insects are beneficial predators on other insect pests. They in turn constitute a major part of the diet of many songbirds. Indeed, reduced numbers of moth and beetle prey species have contributed significantly to the decline of songbird populations in many affluent suburbs. Insect electrocution devices undoubtedly bear some responsibility for this phenomenon. Mosquitoes continue to be more attracted to humans than to the devices. One study conducted in homeowners' backyards showed that of the insects killed by these devices, only 0.13% were female mosquitoes. An estimated 71 billion to 350 billion beneficial insects may be killed annually in the United States by these electrocuting devices.
Let your conscience be your guide.
There is no question that they kill a lot of mosquitoes. In my case the device is placed a good 40 ft from our main sitting area.
BH
No, they DO NOT kill mosquitoes - search "do bug-zappers work":

https://www.topbulb.com/blog/bug-zappers-use-light-kill-insects/

https://membracid.wordpress.com/2008/09/09/do-those-mosquito-zappy-things-really-work/

https://home.howstuffworks.com/do-bug-zappers-fight-mosquitoes.htm

(and from 1997)

https://www.sciencedaily.com/releases/1997/07/970730060806.htm

This article is interesting as it suggests that Bug Zappers ATTRACT
mosquitoes:

https://draxe.com/bug-zappers/

Zappers and Ultrasonics are useless against mosquitoes and kill far too
many beneficial insects.

As I said before, I appreciate Peter bringing this to all of
Terry S
2019-03-18 22:06:34 UTC
Permalink
They work very nicely as a gift to your next door neighbor.
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