...they're pretty common house hold pests...
...um you can try permethrin, bifen, pesticidal oil, dabbing each scale with an alcohol-soaked cotton swab...
...homemade control of plant scale - insecticidal soap. You can bleach free dishwashing liquid (1 1/2 teaspoons per one quart of water).
...homemade control of plant scale - oil spray. Mix two tablespoons of cooking oil and two tablespoons of baby shampoo in one gallon of water. this can also be mixed with one cup of alcohol to help penetrate the insect’s shell.
...good luck