Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: They've Worked Well for Us

I guess it may depend where you live, but we didn't get much feedback or static at all from this product, and the reception is crystal clear. The only time I got static was when I had it on the wrong channel. (If you're getting static, try the other channel. Also, you don't need to have it up on full volume to hear; full volume may be leading to feedback.)This is a very affordable product and has served us well. I like that there are two listening monitors and that you can put batteries in them-that enables me to take them outside and do yard work during my baby's naptime. I don't use monitors at night (our room is close enough to hear her crying); I only use them during naptime when I am working in other rooms of the house or outside. These have functioned very well for that purpose, and they are less expensive than most monitors.