Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Terrible Results

My daughter had both eardrums rupture at 5 months, which is very rare and so I purchased this product. I thought it was working fine b/c several times I'd taken her in for a suspected ear infection and the doctor's would tell me she was fine - no fluid or infection. So I continued to use the monitor, this month my daughter had one eardrum rupture and the other had fluid but no infection and my monitor always gave a reading of level one as before. So clearly this product didn't catch any fluid and an eardrum that ruptured the day after I checked it with the ear check monitor. I am now going to purchase a Dr. Mom's Otoscope and hope I have better results.