Yellow spots on Kale - advice please

They are White Cabbage Butterfly eggs that will turn into Caterpillars and eat the leaves  ,so crush the eggs with your fingers .Are the Kale covered with netting if not cover Kale and all Cabbages .

You will need enviromesh or debris netting with the central holes sewn up to keep butterflies out.   They will fly straight through bird netting given the size of hole.

Thanks.

Is there any spray (ie soapy water) that can be used?

Thanks.

Is there any spray (ie soapy water) that can be used?

Soapy water will get aphids and at least reduce the whitefly, but the yellow butterfly eggs need squashing.  Its not the greatest job, but better than squashing caterpillers.