Whereas I would just spray it with a blast from the hose pipe to shift them or squish with my fingers and let nature take its course when the predators arrive. The WUL is harmful to good guys too.
Vendée - 20kms from Atlantic coast. "We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
The reason for adding washing up liquid is just to break the surface tension of water otherwise when you spray, the water mostly bounces off due to it's surface tension - basically detergent makes water a lot wetter. All that's needed is a couple of drops in a litre or more of water will be plenty. I always use shower gel rather than WUL as shower gel doesn't contain all the powerful grease busting agents and enzymes
Knowledge is knowing that a tomato is a fruit. Wisdom is not putting it in a fruit salad.
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When you don't even know who's in the team
S.Yorkshire/Derbyshire border
"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
I always use shower gel rather than WUL as shower gel doesn't contain all the powerful grease busting agents and enzymes
Wisdom is not putting it in a fruit salad.