Campaigners say gadgets aimed at stopping teens hanging about outside shops should be scrapped, because they aren't fair on kids.
The gadgets - called mosquitoes - send out high-pitched noises which can usually only be heard by young people. The noise is so annoying that it stops kids hanging out in groups there.
But what do YOU think? Are mosquitoes unfair to kids, or a good way of stopping gangs of teens being naughty?
Are there any near where you live, and is the sound really annoying, or not that bad?
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"I think they are a bad idea because apart from it hurting kids' ears, it may harm dogs' ears aswell."
Caitlin, 9, Dunfermline, Scotland
"I think they're great! There used to be loads of older kids hanging around the local community centre and it was quite intimidating. Now they have a mosquito no-one hangs around there anymore."
Taz, 11, Dundee, Scotland
"I think they should be banned because teenagers congregating
in peer groups is part of their social life."
Jacob, 9 Arnold, England
"I think they should be allowed, but only if there are more clubs for teenagers like me to go to."
Philippa, 13, Surrey, England
"I think they need to stay as they will protect other people and try to stop crime."
Thomas, 10, Merseyside, England
"I don't think they're that bad. We shouldn't really be hanging around shops anyway and they're not exactly damaging our hearing, so what's wrong with them?"
Kay, 13, Fife, Scotland
"I think they shouldn't go off automatically, but that nearby shopkeepers should be able to control them and turn them on if teenagers are causing trouble nearby."
Izzy, 12, Sussex, England
"Can't they find a simple and easy way of stopping teenagers hanging outside of schools? It isn't fair on the teenagers that don't hang round outside shops."
Katie, 11, Birmingham, England
"I hate them - they make a really horrible noise and it's not fair on us kids who don't make any trouble. They honestly start hurting my ears."
Jess, 11, Cardiff, Wales
"They're pointless. They're just sound and they don't do much."
Rosie, 9, London, England
"People who are behaving shouldn't hear this because it's painful."
Harry, 7, North Yorkshire, England
"Small kids are scared to go to the shops and at night the older kids just come and start to pick on you. No one should be allowed to hang around at night."
Jordan, 9, Merseyside, England
"The anti-teen buzzers should stay because they stop teenagers stealing stuff from the shops."
Ben, 10, Essex, England
"They should be scrapped because I've walked past a shop and had ear-ache for two days!"
Jack, 12, Essex, England
"Yes they should be banned because they will make toddlers and children cry."
Sophie, 12, Devon, England
"I think these terrible torture weapons should be destroyed, as I don't see the point in practically deafening teens."
Oli, 14, Los Angeles, USA
"I think they are a good idea for youngsters over 14, as they are the ones that usually cause the most trouble. I don't think it's fair for anyone under 14."
Hannah, 9, Leicestershire, England
"I think it's a good idea for teens and gangs, but what about babies? Some babies don't like a lot of noise."
Katie, 10, Edinburgh, Scotland
"I think they should only set the alarms off when there are gangs outside, otherwise it could affect other people who aren't doing anything wrong."
Lissie, 12, Nottingham, England
"They should only use it at night."
Daniel, 7, Prenton, England
"I don't think they should be banned, but if they put the age to 12-18 they would be better."
Tasha, 12, Cheshire, England
"The buzzers are a good thing to stop crimes, but people hang about on street corners because there is nothing much to do."
Hannah, 12, Swansea, Wales
"I think they are stupid. If adults are annoyed with teenagers hanging around, they should find out why they are doing it, then find some other way of dealing with it."
Emer, 10, Devon, England
"Why should all teenagers be tortured when they just want to hang out?"
Katie, 11, Leeds, England
"I think it is completely wrong because adults are taking advantage of our good hearing!! Most of us have done nothing wrong."
Hannah, 11, Wick, Scotland
"I can't believe this thing was even invented. It is discriminating against teens - not all of us are horrible."
Adam, 13, Bournemouth, England
"Young people are always treated unfairly - older people treat kids like criminals when most of us haven't done anything!"
Annie, 12, Sunderland, England
"I think they should be around because every night I see teens hanging around and they make so much noise that I can't sleep!"
Asal, 10, Manchester, England
"They only move gangs to another shop which doesn't have one!"
Tilly, 9, Cardiff, Wales
"The buzzers should be banned because they might scare young children or damage their ears if they hear them too much."
Sally, 11, Essex, England
"I think they will be good to get gangs off the street but annoying if the sound goes off when you're not doing anything."
Joe, 12, Southend, England
"Why are they repelling us like rats and vermin? They are annoying and should be banned."
John, 13, Bury, England
"They are good as they can stop shopkeepers becoming afraid of anti-social behaviour."
Charlie, 11, West Yorkshire, England
"I think it's unfair on sensible kids, but it's right to have it for gangs and thugs."
Chris, 12, Bath, England
"I think they are silly because there are some young children, doing no harm, who can't play because of the mosquito."
Frankie, 12, Finchampstead, England
"I would like to ask what exactly is wrong with hanging around with your friends? Spend too much time indoors and they call you fat, spend too much time outdoors and they call you a thug or a yob. There might be a few 'yobs' around but it's only 5-10%."
Ali, 13, Bradford, England
"I think they should keep the anti-teen buzzers because it will keep kids from stealing and stuff like that."
Callum, 11, Bath, England
"My dad got a mosquito for our shop and it stopped gangs staying outside the entrance. I feel much safer now."
Aisha, 15, London, England
"I think it's an AWFUL idea. There's one at my local shop. Not all kids misbehave and the noise is so irritating. Adults don't seem to care how we feel about this. It's a harsh way to make us behave and it's unfair!"
Alicia, 11, Doncaster, England
"What's wrong with children being in groups? The buzzers are inhumane and they affect everyone, including small children. They should be scrapped!"
Miuccia, 13, Lincoln, England
"I think it's a good idea but it's unfair on the kids who aren't doing any harm. While some kids are shouting and swearing outside shops, others are simply going shopping. Also, this noise can probably be heard by little children who won't be causing any harm. SCRAP IT!"
Harriet, 13, Ryde, England
"Yes! They're inhumane - not all teenagers are thugs. Why hurt and stop everyone from going to certain places just because of a few people who don't know how to behave?"
Katie, 13, Manchester, England
"There is one of these at my local shop. There is no problem as long as you don't hang around for a long time. Sure it affects everyone that can hear it but as long as you don't stand near it for a long time it doesn't bother you. This is the good thing about them, they stop gangs from hanging around for hours causing trouble. I say let them stay. "
Cleo, 15, Lincoln, England
"I think they're really annoying and should be banned."
Titus, 9, Wigan, England
"I'm not so sure because they are good and discourage kids from hanging around in groups. Then again, it could stop them from going out and getting enough fresh air and exercise."
Amira, 12, Bradford, England
"We don't have anything like that here but they sound really annoying. It really must irritate the babies and toddlers too."
Cate, 13, USA
"I do actually think that they are a good idea. A supermarket near us has got one but I haven't heard the noise yet LOL. Then my opinion would change!"
Hannah, 13, England
"I don't think it's very fair, as not ALL young people behave badly."
Tracy, 11, Leicester, England