Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works for For A Couple of Days

It works, but only for a couple of days. It smelled, but I didn't mind it as long as the mosquitoes were nowhere near me. Two days later the mosquitoes were back and the weather had been sunny for the two days. I would recommend this product if it worked longer (I would be ok with weekly) but two days is not nearly enough.