This is interesting. Try it out and let me know if it works.

The mosquito control technique but instead of using Lemon Fresh Joy, I
used Harimau Kuat Lemon flavoured dish wash liquid (yellow bottle and
about RM2.80) and..... it actually works. Thanks to my niece. It's cheap
and non poisonous like Ridsect of Fumakilla and the others.

Finally, found this simple home tip:-

You have a lot of mosquitoes in your bedroom? Try this.

Mosquito Treatment: So you don't like those pesky mosquitoes. Here's a
tip that was given at a recent gardening forum. Put some water in a
white dinner plate and add a couple drops of Lemon Fr R Set the dish on
your porch, patio, picnic table, park bench, or other outdoor area. Not
sure what attracts them, the lemon smell, the white plate colour, or
what.

BUT ... mosquitoes flock to it, and drop dead shortly after drinking the
Lemon Fresh Joy/water mixture, and usually within about 10 feet of the
plate.

TRY IT--- it works just superb! It may seem trivial, but it may also
help to control mosquitoes around your home, (especially in areas where
the West Nile virus is reaching epidemic proportions in mosquitoes,
birds, and humans).

Pass this on to anyone who likes sitting out in the evening, or when
they're having a cook out.