Hi,
You could try Carbaryl 5% Dust. This is the description given in the store I like:
Controls many insects in vegetable gardens & ornamentals. Use in lawns for Fall armyworm & Sod webworm CONTAINS: 5% Carbaryl Insecticide. USE ON: Most vegetables, lawns, ornamentals and fire ant mounds. CONTROLS: Mexican bean beetles, armyworms, leafhoppers, grass hoppers, tomato fruitworms, flea beetles, corn earworms, fire ants, ticks and fleas.
Leave you the link in case you need it:
Control de plagas para orquídeas