Harris Home Pest Control Bed Bug Killer uses an odorless formula. Approved for indoor use in apartments and residences. Additionally, it features an extended trigger sprayer for easy application. The gallon is an excellent value, allowing for repeated applications on an ongoing basis to effectively eliminate bed bugs. The spray is great to use in combination with a bed bug fogger, bed bug traps, bed bug interceptors, bed bug powder, bed bug bombs and bed bug mattress encasement covers to eliminate these bugs from your home.Harris Bedbug Killer 32oz kills bedbugs and lice and comes with a trigger spray for easy application. Our ready to use formula is highly effective in killing bed bugs in your home or apartment. We recommend using this product in combination with our bed bug aerosol egg kill on mattresses, box springs, walls, floors and carpets and following up with diatomaceous earth bed bug powder behind electrical outlets and around switches where bed bugs tend to congregate. The odorless, non-staining formula kills bed bugs after the spray dries.