Reporter Liu Yan
What should I do if there are cockroaches in the house that cannot be killed or killed? Use chemical cockroaches, afraid that pollution is not conducive to human health; use physical methods such as sugar water to capture it, and the effect is slow and cannot be eradicated.
How to completely eliminate cockroaches has caused many people a headache. Recently, a so-called green environmental protection "cockroach extermination artifact" - white-fronted high-legged spider popular network, causing many netizens to discuss. On the e-commerce platform, the price of the white-fronted high-legged spider is also bullish.
So, what kind of spider is the white-fronted tall spider? Is it non-toxic and harmless to the human body? Is the anti-cockroach effect of the white-fronted tall spider really more effective than various potions?
Cockroach predators are poisonous and harmless and do not actively attack people
Some shops say that the white-fronted tall spider is the natural enemy of cockroaches, which feeds on cockroaches, is "non-toxic and harmless", and can be kept as a pet. And the white-fronted tall spider "only climbs the wall and does not climb the bed" does not affect our lives.
Many people said that although the spider itself is also frightening, compared to the hateful cockroach, they still choose to buy this seemingly scary and actually friendly spider.
"The white-fronted tall spider is the name of Taiwan in China, and the mainland is called the white-fronted cancer spider, also called the hunting cancer spider, which belongs to the genus of cancer crab spiders in the family Of Crabs. It is a large spider widely distributed in tropical and subtropical regions, and is very common in the southern region of China. Zhang Feng, vice chairman of the Arachnology Professional Committee of the Zoological Society of China and director of the Hebei University Museum, told the Science and Technology Daily reporter that the white-fronted tall-legged spider is a nocturnal animal that often comes out at night to feed, usually appears indoors and in the courtyard around the house, mainly feeding on cockroaches, moths and other insects.
"It is indeed one of the natural enemies of cockroaches." Zhang Feng introduced that the white-fronted tall spider is larger, with a body length of about 20 mm, and there is a clear yellow-white stripe on the anterior and posterior edges of the cephalothorax.
In response to the non-toxic and harmless advertised by merchants, Zhang Feng said that the white-fronted high-legged spider is basically "poisonous and harmless". "The vast majority of spiders have venomous glands, and white-fronted tall-legged spiders are no exception. However, its toxicity is relatively small, it can only deal with insects, and generally does not harm the human body. Zhang Feng told the Science and Technology Daily reporter that the white-fronted high-legged spider does not take the initiative to attack humans, but in a closed environment, there is still a risk of being bitten.
Experts remind that although the toxicity of white-fronted tall spiders is weak, people with allergies should pay special attention to the harm after being bitten, which may cause allergies.
The effect of the "artifact" to kill cockroaches is limited, and it depends on potions in addition to the roots
In a viral video circulating online, netizens let a white-fronted tall spider and a cockroach coexist in a confined space. As the cockroaches continued to tentatively approach, the spider suddenly extended its legs and pulled the prey into its arms, and the immobile cockroach was quickly stuffed into its mouth and turned into a delicacy.
Some people have commented that the white-fronted tall spider is a beneficial insect, eating a lot of food, and can hunt multiple cockroaches in a row. At the same time, the white-fronted tall-footed spider can be artificially raised, it is very resistant to hunger and easy to raise; when the cockroaches in the home are extinct, the white-fronted tall-legged spider will naturally leave in order to forage for food.
Is the white-fronted tall spider really so magical? "The use of white-fronted tall-footed spiders to eliminate cockroaches in the home is theoretically feasible, but the control effect is difficult to control, and most of the spiders are 'loners', which is difficult to raise in large quantities." Zhang Feng explained that the white-fronted tall-legged spider does not specifically prey on cockroaches, but feeds on small insects, including cockroaches, and "uses white-fronted tall-legged spiders to 'kill cockroaches', and the effect is limited."
Experts say that this "insect-to-insect" biological control method is difficult to judge. If the home is relatively clean and the number of cockroaches is small, one or two white-fronted tall-legged spiders can kill cockroaches. However, if there are many cockroaches in the family and do not like the swarms of white-fronted tall-legged spiders that cannot be dealt with naturally, the cockroach killing effect will not be too obvious, and it is not necessarily more efficient than various chemical and physical methods.
If you really want to eliminate cockroaches in your home, the following methods are worth trying: use a trap to kill cockroaches, but the effect is uneven; the use of low-toxicity indoor insecticides (smoke sprays are more effective), can kill cockroaches in the cracks, but the requirements for environmental tightness are higher; with anti-cockroach bait, this bait toxin will stick to the cockroach and carry it into the nest. This method of cockroach control is slow to work, but the advantage is that it is sustainable.