Instruct: Classify the given review into positive or negative sentiment.
Query: Fail

Didn't work and before you comment, yes I vacuumed, sprayed the carpet, and washed the sheets etc. every week. It still failed. Later I read on-line that it hasn't been working as well this year, fleas building up immunities and all that. Anyways I live in Fremont CA right now so if you do too maybe try Advantage, Natural Defense, or "Program" (Lufenuron). I'm trying "Program" next month (this month I tried Bio Spot, big mistake). Anyways I am going to combine it with a Natural Defense carpet and furniture spray. Actually I'll start the carpet spray part this month.