Gardening with houseplant scale

Here's the info on that:

• plants outside last summer
• sprayed w/Safer soap upon bringing them in
• forgot 'em except watering thru holidays
• Jan. comes and EEK - scales!
• Hudson said at interview to spray again w/Safer
• been spraying weekly since
• leaf-drop stopped after 2nd spraying
• still spraying and hoping
• one 4 ft. Ficus and one 6 ft. Schefflera
• next year I will use Di Syston as recommended by lecturer Jackie
• let you know how they turn out