They can be used at the same time, but they should not be applied in the same area. An example of utilizing both is if you do a perimeter spray of Phantom Termiticide Insecticide, and then used the Mother Earth D in voids, cracks, etc. where you cannot spray
Phantom Termiticide Insecticide needs to come in contact with the soil to be the most effective but you can spray on top of the barrier as well. The typical dry time is dependent on the amount of moisture you could have don't there. It could be anywhere between a couple of hours and a couple of days. As for your clothing, the product label states "Remove contaminated clothing and wash before reuse."
Phantom is labeled for use indoors on cracks and crevices. Outdoor applications are limited to spot and crack and crevice treatments around door frames, window frames, eaves, attic vents, and holes where utilities enter into the structure not out in the yard. Please be sure to review the product label for more information and complete application instructions. Also, please take a moment to review our Termite Guides for helpful tips on eradicating this pest.