Ultrasonic Mosquito Repellent oh Ultrasonic Mosquito Repellent

Recently my son bitten by a lot of mosquito.

Plan to buy this one:

[Up to 53% Off] Ultrasonic Mosquito Repellent for Homes and Offices. Choose 1 (RM45) / 2 (RM85) Units. From RM42.50 per unit. Free Delivery to Pen. M'sia. Limited Groupons

http://www.groupon.my/deals/national-deal/LBS-Technology/717128115?nlp=&CID=MY_CRM_1_0_0_178&a=715827970

But after I check the effectiveness of UMR, it is not effective.

You can read here:

1) http://www.consumer.org.hk/website/ws_en/news/press_releases/p42905.html

2) http://www.thecochranelibrary.com/userfiles/ccoch/file/CD005434.pdf

Please be a SMART consumer and DO not waste your money.

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