No Permethrin SFR 36.8% is not labeled for use on household furniture.
We do not recommend using Permethrin SFR 36.8% within 25 feet of a water source souch as a pond or stream. When using the product topically on the soil surface there should be not be any issues with well water unless your water source is close to the top of the soil. Should you be using this product for a termite treatment within 10 feet of a well we would recommend using the back fill method. Which is dig out the soil and treat the soil, and return it to the area treated not by pouring the product in trenching. Anything within 5 feet of the well we do not recommend using for termite treatments.
Two insecticides like Permethrin SFR 36.8% and Bifen XTS should not be mixed together. Creating a pesticide mixture that is too string can backfire, causing insects to avoid the treated ares. However, NyGuard IGR can be mixed with either of these alone.
Malathion is not labeled for ticks and should not be mixed with Permethrin SFR 36.8%. We would recommend using Permethrin SFR at the rate of 04. to 0.8 fl oz per 1000 sqft for ticks. It would also be a good idea to incorporate an insect growth regulator (IGR) such as Archer IGR for complete control of ticks. All of these products are pet safe if used as directed. Pets need to be kept out of the area being treated during application and until everything is completely dry.
Please look over our Tick Control Guide for more information on treating and preventing this pest.
We would recommend using hot soapy water with a mild detergent to remove any unwanted residue.
You can also help by creating a "tick safe zone" in your yard. You should have an area that is at least 9 ft wide between your yard and any wooded area. Trim back trees to allow as much sunlight as possible into your yard. Keep grass as short. Remove as much leaf litter as possible. A clearly defined, well manicured border between your yard and any wooded areas or weedy lots will reduce the chance of ticks infesting your yard.