Scale on an outdoor plant
my folks have a plant (I'm not sure which one it is, they live hundreds of miles away) that has scale. it's about five feet high. they don't want to use chemicals to get rid of the scale, and obviously a baby wipe on each leaf isnt going to happen LoL Any ideas? Other than alcohol spray, soapy emulsion (can be mixed w/alcohol), horticultural oil applied ever few days, I do't really know how to advise them. thanks!