This stuff actually works for the price i brought this for my sister and she told me it gave her amazing results the first week she used it she didnt feel and more bugs crawling i did not buy this because i had bed bugs but to make sure i didnt have them

Not sure how well it prevents bed bugs so adding one star for the benefit of the doubt

But as for “killing on contact” − no they crawl right after i use this thing so it doesn’t work this way

We used some other more powerful spray hoping to kill bed bugs and it didn’t work although we yet didn’t know that