2. On the packaging of mosquito-repellent incense, according to its formula characteristics, it is required to mark "low toxicity" or "slight toxicity". The toxicity of standard "micro-toxicity" is low. There is no so-called "non-toxic" product, but it is advertised or labeled, not a regular product. Eating braised pork will increase people's blood lipids, and eating seafood will increase cholesterol. There are PM2.5 particles in the air, but there are no completely harmless substances.
3. In a word, the electric mosquito repellent liquid has better dispersibility and mosquito repellent effect. If the economy permits, try to use the electric mosquito-repellent incense marked "slightly toxic". If there are babies, pregnant women and people with respiratory diseases at home, it is best to buy mosquito-repellent incense with the formula of "fenvalerate", which is a patent of Sumitomo in Japan and is the product with the lowest toxicity and the best mosquito repellent effect at present. Because it is a patented product, it needs to be imported and the price is relatively expensive. It is generally used by professional infants such as kidhope.
4. The mosquito-repellent incense ignited by an open flame is carbon powder+medicine, which belongs to obsolete products. After being ignited, indoor pm2.5 will seriously exceed the standard, but it also has corresponding advantages, that is, it is cheap, does not need electricity, and is suitable for outdoor camping, camping, or remote and poor villages.
5. The electric mosquito-repellent incense tablets separate out effective components by heating, because a certain amount of pigment will be added for users to judge the use situation, and heating will not completely separate the paper, so the effect and environmental protection performance are not as good as those of the electric mosquito-repellent incense liquid.