Hi blubluh: To repeat, for vegetables that need checking – buy very fresh vegetables but DO NOT buy ORGANIC or from a farmers market; they are usually infested. BTW: I always assume that any leafy vegetable that I buy has bugs and go from there.
This is for both broccoli and cauliflower:
I put the florets into slightly salty water (you can use a few drops of liquid soap as well) and agitate vigorously. Repeat until water is clear (usually once or twice). Pass the florets under a spay of cold running water. Inspect a few thoroughly. You will have the cleanest and best tasting florets around. Peal the woody stems with a knife or peeler and you can eat what remains.
For strawberries: In truth, I have never found a bug in any of my strawberries. If you can, buy recognized brand strawberries and make sure the leaves are green and the berries firm like they were picked yesterday.
Put a few drops of soap into water and agitate. Repeat until there is no soap residue. Rinse and drain strawberries and inspect. Done.