I used permethrin instead of elector PSP or Diatomaceous earth. From what I’ve heard it’s the better route. Permethrin doesn’t quit Functioning when it will get moist (like diatomaceous earth) and comes in powder form (in contrast to elector PSP). I found every thing I required at Tractor Supply Co. https://elliottibtka.ttblogs.com/16008685/chicken-dash-game-things-to-know-before-you-buy