The 9th grade student invented a mosquito repellent from tea residue

Being bitten by mosquitoes during the lesson, the 9th grade student created a mosquito repellent completely with 'homegrown' material and won a high prize in creative competitions.

The 9th grader and mosquito repellent product from tea residue

She was Ly Binh Nhi (living in Ward 3, Bac Lieu City), a student of Vo Thi Sau Secondary School (now a grade 10 student specialized in Bac Lieu specialized high school, Bac Lieu province).

When making incense products, except for the winning mosquitoes, Nhi is only 15 years old.Your product 'Mosquito-killing tea' has just won the second prize in Bac Lieu provincial youth youth contest in 2014 - 2015 (without the first prize) and the encouragement prize for the National Youth and Youth Competition. .

Around August of last year, while studying at home, the mosquitoes were bought out of the fire market. Looking at the side, there is tea residue, which has long heard people say that smoke from tea residue works to repel mosquitoes, Nhi takes fire to try and it is true that mosquitoes are afraid to fly away. So the idea of ​​making incense out of mosquitoes with tea residue flashed in her thoughts of this specialized student.

Ly Binh Nhi and mosquito-repellent tea products with 'home-grown ' material - (Photo: Phan Thanh Cuong).

The next day Nhi went to school to discuss immediately with her classmate, Lam Vu Phuong, and both asked the chemistry teacher and also the homeroom teacher, supported by the teacher.

So the two shook hands . went online to see what folk materials could chase mosquitoes. Besides, they also had tangerine and pomelo peels. Having these ideas, both go everywhere to collect tangerine, grapefruit and tea residue then dry, crushed but don't know how to stick.

Thinking back and forth, Nhi tried to cook glutinous rice flour and mixed it again, but I did not expect these materials to stick to very beautiful ingots. Nhi brought to the class to give you the product and gave it to the neighbors to try with the survey to see how it suddenly got good results, even some people . asked to buy and use it because when burning this incense when mosquitoes escape, the smells of herbs are very pleasant.

Therefore, Nhi confidently sends this product to the school level test and then passes the provincial exam, which is awarded by the provincial professional council and sent nationwide.

Sharing about this result, both Binh Nhi and Vu Phuong want to: 'If someone buys a license or invests in the product to market, we are ready to cooperate, this is a completely natural product. , do not worry about health problems and smoke poisoning because they do not use chemicals. However, we are not satisfied with the mosquito incense box design and want to make it more eye-catching. '

Mr. Phan Duy Tuyen, chairman of the Union of Science and Technology Associations of Bac Lieu province, commented that the mosquito-repellent tea products of Binh Nhi and Vu Phuong have high feasibility and correct scientific principles so the scientific council The province has just finished the second prize (the contest has no first prize).

'Your ideas are very good, both environmental protection and high practicality, materials are easy to find. But to be put into mass production, there is a need for dedicated people to work together " - Tuyen said.

According to Mr. Tuyen, in fact, the province also has students who create products to kill ticks (usually live on dogs, cats .) and have been bought this idea by enterprises.