Brussels Lace....
 

My first year as a veggie gardener has been brilliant - except for my
Brussels Lace (sorry, sprouts.)

Despite the use of Derris Liquid and picking off caterpillars every other
day, the leaves have been reduced to skeletons. Sprouts are still forming on
some of the plants, but it all looks a bit sad. (I probably brought it all
on myself by having several insect-friendly areas in the garden.)

Is there a way to get round this without setting up a caterpillar-squishing
rota for the family?