How to use mosquito bombitas? Light the charcoal in well-ventilated places and allow the aroma to diffuse;do not breathe in the fumes directly from the emission points;use an incense burner suitable for fumigating incense charcoals or a smudge bowl;when you are done, air the room. N.B. Keep out of reach of children and pets. Do not place burning incense near flammable materials. Make sure the ash falls on a fireproof surface. Outdoor use. Do not ingest.