Demon WP is not labeled for bedbugs. We recommend that you read our How to Get Rid of Bed Bugs guide for a better understanding of what needs to be done and what products are needed to be able to get rid of these pests.
Demon WP is an insecticide so it would not be helpful in controlling a mice problem. You can look over our Rodent Control Guide though and that will show you the steps and products needed for eliminating mice in different situations.
Demon WP is labeled for carpenter bees and can be used on trees. This product does leave a residue so be mindful of that.
We generally recommend using Dominion 2L for carpenter ants in trees. This can be used directly on the tree or as a soil drench.
Also, please check out our Carpenter Ant Guide for tips on how to treat and prevent carpenter ants.
There is not a specific time that's best to apply Demon WP to your yard for fleas. The important thing is just to make sure that you do a thorough treatment around your yard. Mix one packet of Demon WP to one gallon of water and make sure it dissolves completely before you begin spraying. You will need to re-treat every 14 days as needed for flea control. Most folks find they have to do between 2-4 treatments to get rid of the fleas for good. You may want to look over our Flea Treatment Guide for more tips and information.
Demon WP Insecticide should not be mixed with hot water just regular temperature water. It is not a contact kill spray for knocking down wasps. It is labeled for them as a residual application to interior and exterior crevices. We do carry a product that is called Wasp-X. It kills flying stinging insects on contact with a very fast knockdown and kill. For more information on treating wasps, please take a few moments to review our treatment article on How to Get Rid of Wasps for a successful eradication program.
The 1lb Jar of Demon WP makes over 30 gallons of finished solution so it will last a long time. However, you will need more than just one product to really start seeing results. You should purchase our Roach Control Kit #2. It comes with a couple other products including Demon WP and when used together they can really put a dent in your roach problem.