Having spent twenty quid on 3 LED Blue Light Insect Killer devices
which plug in directly without a cable but are completely ineffective,
I invested another tenner on a cabled stand up type with a high
voltage grid. The tube went on the previous model after a couple of
years. This one was fitted with a blue 25 W screw cap bulb. Although
it worked temporarily I've got through two bulbs in a week which are
not cheap. Just hoping this post will save another punter from wasting
their money - stick with fluorescent tube insect killers.

"civet" wrote in message
ups.com...
Having spent twenty quid on 3 LED Blue Light Insect Killer devices
which plug in directly without a cable but are completely ineffective,
I invested another tenner on a cabled stand up type with a high
voltage grid. The tube went on the previous model after a couple of
years. This one was fitted with a blue 25 W screw cap bulb. Although
it worked temporarily I've got through two bulbs in a week which are
not cheap. Just hoping this post will save another punter from wasting
their money - stick with fluorescent tube insect killers.

My understanding is that tubes cease to be effective long before
they pack up altogether. I think they advice annual replacement,
but it would depend on its usage cycle.

No idea about LED. Do they radiate significant amounts of UV?

--
Graham.
%Profound_observation%

On Thu, 9 Aug 2007 00:21:00 +0100, Graham. wrote:

No idea about LED. Do they radiate significant amounts of UV?

"Blue" and "white" LEDs might emit some UV as I believe they make the
visible "colour" from fluorescing phosphors rather than direct generation
of light as in older red and green LEDs.

This may or may not be of suitable wavelength and level to attract
insects.

--
Cheers
Dave. pam is missing e-mail

In article et,
"Dave Liquorice" writes:
On Thu, 9 Aug 2007 00:21:00 +0100, Graham. wrote:

No idea about LED. Do they radiate significant amounts of UV?

"Blue" and "white" LEDs might emit some UV as I believe they make the
visible "colour" from fluorescing phosphors rather than direct generation
of light as in older red and green LEDs.

This may or may not be of suitable wavelength and level to attract
insects.

Different insects are attracted by different things.
For house flies, a dollop of dog's mess would work much better.
For mosquitos, you want an infrared light and a CO2 source.
For moths, you want a near-UV source.

As I said in an earlier thread, insect eating plants work better
for me.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

"Huge" wrote in message
...
On 2007-08-09, Andrew Gabriel wrote:
In article et,
"Dave Liquorice" writes:
On Thu, 9 Aug 2007 00:21:00 +0100, Graham. wrote:

No idea about LED. Do they radiate significant amounts of UV?

"Blue" and "white" LEDs might emit some UV as I believe they make the
visible "colour" from fluorescing phosphors rather than direct
generation
of light as in older red and green LEDs.

This may or may not be of suitable wavelength and level to attract
insects.

Different insects are attracted by different things.
For house flies, a dollop of dog's mess would work much better.
For mosquitos, you want an infrared light and a CO2 source.
For moths, you want a near-UV source.

As I said in an earlier thread, insect eating plants work better
for me.

I've never been able to keep Venus flytraps alive for any length of time,
otherwise they'd be an ideal solution.


--
"Religion poisons everything."
[email me at huge {at} huge (dot) org dot uk]

VFT - dont give them tap water just rain water. No fertilisers of any kind.
Keep them at 1-5 deg C in Winter as they like a bit of a rest!!
Cut off any flowers that appear as it weakens them.

In article ,
Huge writes:
On 2007-08-09, Andrew Gabriel wrote:

As I said in an earlier thread, insect eating plants work better
for me.

I've never been able to keep Venus flytraps alive for any length of time,
otherwise they'd be an ideal solution.

Same with me for Venus flytraps. They can only eat a few insects
a year before they overdose on nitrogen anyway, so they aren't
really suitable for insect control.

I use pitcher plants and a sundew. You just have to keep them
saturated with rain water, as they expect to be growing in soil
which has little/no nutritional value due to it being washed away
by frequent rain, which is why they evolved to get their nitrogen
from insects. (Some can't fix nitrogen from the soil at all.)

Some require rain to top up their pitchers (so you have to put them
out whilst it's raining or save some rainwater and do it yourself),
and some fill the pitchers by themselves and shield them from
dilution by rain.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

In message et, Dave
Liquorice wrote
On Thu, 9 Aug 2007 00:21:00 +0100, Graham. wrote:

No idea about LED. Do they radiate significant amounts of UV?

"Blue" and "white" LEDs might emit some UV as I believe they make the
visible "colour" from fluorescing phosphors rather than direct generation
of light as in older red and green LEDs.

This may or may not be of suitable wavelength and level to attract
insects.


You can get UV LEDs.

http://www.maplin.co.uk/Media/PDFs/N74AJ%20%20(ETG-5UV400-30).pdf

--
Alan
news2006 {at} amac {dot} f2s {dot} com