My own convenient mixture, just what I had on hand but works for fleas in carpet: Boric acid (roach proof), carpet freshener, baking soda, Sevin Dust 5% mix and put back in carpet fresh shaker. Hit the tops of baseboards and the whole carpet even under furniture everything. I am tall avoid breathing the dust! Vacuum frequently apply until fleas are gone then apply one last time. 1/4 teaspoon boric acid to a quart of water is eye wash! If you need a spray just enough dish liquid (Dawn) to produce bubbles with the sprayer wet (drown) what ever it is dead no residual action, mild laxative if you drink enough!