Harry from Boca Raton Fl 33498 writes
You can apply Delta Dust as often as needed, however Delta Dust like any other dust products are meant to be applied only in wall voids, cracks and crevices, underneath appliances, etc. It should not be applied out in the open. When you apply Delta Dust correctly in these places, it can last up to 8 months, so you don't need to apply Delta dust but every so often.
Answer last updated on: 12/10/2011