It would be best to wash the mattress cover that was exposed to Alpine Dust if contact was made.
We would recommend using Alpine Dust. It is considered a reduced risk product by the EPA. It is also highly recommended for bees, because it will not excite them as much as other dust when treating.
No, you can not apply Alpine Dust to electronics. We suggest using Nuvan ProStrips. We recommend keeping items sealed in a bag for a minumum of two weeks in order to kill bedbugs and bedbug eggs.