You should mix 2 packets of Demon WP per gallon of water per 1,000 sq ft for treating cockroaches.
Yes, Demon WP can be applied to the indoor cracks and crevices for the listed pests. It can be applied once every 90 days indoors to the areas listed on the product label.
Demon WP Insecticide is labeled to treat for chiggers.
Provided the product was used according the the product labeI instructions it would be highly unlikely as Demon WP is mixed with water and then sprayed outdoors. There should be no interaction with your AC venting in order for this to be able to get indoors like that.
Yes, Demon WP is safe for use in and around your boat house and/or dock. Be sure not to use this product in areas that will come in contact with water. If it comes in contact with water, it will harm the invertebrates there. You will use 1-2 packets per gallon of water.
Demon WP will kill just about any insect, including all types of ants. However, Demon WP will only kill the ants that walk over where you treat around your home. It will not take care of the queen and other ants back where the colony is. The key to ant control is to use a product that will not kill the ants around your home on contact like Demon WP will, but a product that they will take back to the colony and kill the queen and other ants at the source. Our most popular product for this is Termidor SC. Or, you can use ant baits that the ants will eat and take back to the colony.