By Pogs56
United Kingdom 
how do i get rid of green fly and black fly
30 Aug, 2014
Answers
Use an Eco one if you can.
30 Aug, 2014
I now add a drop of cooking oil to my soapy water as it makes it stick and stay on a bit longer,
30 Aug, 2014
No Snoopdog
31 Aug, 2014
The soap, and probably other things in the washing-up liquid causes the oil to emulsify and mix with the water. After all, it dissolves grease on plates.
31 Aug, 2014
A strong solution of washing-up liquid sprayed onto the leaves.
30 Aug, 2014