Fantastic spay! Kills spiders and woodlice too!! We unwillingly adopted rabbit like flees; from what we believe was from me letting a local cat in a couple of times. I say rabbits, not that they were that size! An ingenious reintroduction to a redundant tennis racket would have sorted those suckers out. These little gits were far trickier to deal with initially. The speed they populated the entire house in a week was unbelievable! They seemed to love my blood too; I must have had a sign on my legs, in flee language of course, saying, 'all you can drink bar'! Anyway, first can of spray arrived within a week. Carpeted stairs well and truly coated; carpeted bedrooms (x2) covered, mats and skirtings around vinyl floor of bathroom sorted; skirtings to wooden kitchen floor and utility room done; carpeted entrance lobby and mats covered; skirtings around living room..can running out! I managed to just about cover the living room carpet areas most occupied, but ran out. If I hadn't been so liberal on the stairs I would probably have covered the living room carpet too! I ordered another can. This arrived in a couple of days, by which point I had only received a couple of new bites, from one or two hardcore little bast**ds. Well and truly covered every square inch of the living room carpet and every nuck 'n' cranny of the sofas, as well as a few places around the house where I was a little shy originally. I have half a can left...for spider prevention. It may seem a little expensive, but the results are amazing!