Kent,
United Kingdom 
Hello what is safe to spray runner beans for black fly that won`t kill us i have only seen one ladybird this year so no help there they usually do a good job i think it was the cold weather killed them we usually have them hibernating just inside the back door and under the wall tiles outside
5 Aug, 2013
Answers
Any proprietary insecticide licensed for vegetables.
They are perfectly safe if used correctly.
5 Aug, 2013
Previous question
« Scruffy lawns? The small back lawn I have inherited looks more like meadow grass...
Next question
Try one of the eco friendly washing up liquids watered down and sprayed on.
5 Aug, 2013