Application of black light in rodent infestation inspection

Rodents are the reservoir host of many natural epidemic diseases, and the plague spread by them is the number one plague in human history. In the 14th century, in order to control the spread of the Eastern plague to Europe, the world's first quarantine station was established in Venice, Italy. Merchant ships from abroad needed to stay outside the port for 40 days and were allowed to enter the port only if there was no epidemic. The term quarantine commonly used internationally today comes from the Italian word "Quaranta", which originally means "40". To this day, plague continues to break out in local areas. According to the International Health Regulations, rodent inspection and rodent monitoring of outbound transportation vehicles and port places are an important part of port health control work. However, the rodent inspection method we commonly use now still stays on searching for rat hair, rat feces, rat bite marks, rat runways, rat nests, dead rats and live rats. Although it has a certain effect, it is a large workload and lacks advancement. Therefore, in the process of rodent inspection, it is urgent to introduce advanced instruments and equipment to provide valuable clues for inspection and quarantine personnel. The following is an instrument for rodent inspection that can help inspection and quarantine personnel - LUYOR-2120B black light.

LUYOR-2120B black light, also known as ultraviolet light, uses the principle of fluorescence to inspect rodent urine and rodent hair. For professional rodent inspection and quarantine personnel, LUYOR-2120B black light can provide the following help:

identify the path of rodents into buildings, check the runways of roof rats in hard-to-reach areas such as dark eaves and ceilings, help determine the most effective location for placing poison baits, mousetraps or mouse cages in areas where rodents are active, and help determine the activity range of hard-to-find rodent species. These rats usually do not leave rodent feces, so it is difficult for people to find their traces, but they will definitely leave rodent urine (difficult to directly identify with the naked eye). As a monitoring tool, it is used to check the activities of rodents on ceilings, floors and buildings, and to check whether the food in the human warehouse is infested or contaminated by rodents.

Under the LUYOR-2120B black light, the fluorescence of fresh rat urine is blue-white, and the fluorescence of dry urine is yellow-white, which becomes dimmer over time. Typical rat urine is linear, like a string of water drops from large to small (caused by rats urinating while moving). Rat hair fluoresces blue-white and is easier to identify. After finding fluorescent traces of rat urine or rat hair with the LUYOR-2120B black light, the search range for rat traces can be narrowed. Before this, we sometimes cannot make a decision whether to conduct further inspections because there are no clues, and even mistakenly conclude that there is no rat infestation.

The LUYOR-2120B black light is a handheld high-intensity black light produced by Luyang in the United States. The LUYOR-2120B black light is battery-powered and can work continuously for several hours after being fully charged. The LUYOR-2120B black light can easily find rat traces even at a distance of 5 meters. The LUYOR-2120B black light has brought great convenience to the quarantine department.

Why do we need to test for plague?

Plague is one of the international quarantine infectious diseases and is also listed as a Class A infectious disease in China. Due to its characteristics of rapid onset, rapid death, and high mortality rate, once it spreads, the consequences will be unimaginable. Therefore, in the quarantine of international ships, rodents have always been an important medical medium for monitoring. As a second-hand ship, it is even more necessary to strengthen the inspection and discovery of rodents to prevent the spread and spread of rodent-borne diseases. In fact, rats are the storage host or medium of many diseases. The diseases transmitted by rats to humans include plague, hemorrhagic fever with renal syndrome, leptospirosis, typhoid fever, and murine spotted typhus. There are three ways for rats to spread diseases: first, rats use external parasites as a medium, and transmit pathogens to humans by biting and sucking blood; second, rats with pathogenic microorganisms in their bodies contaminate food or water sources through their activities or feces, causing illness in humans after eating; third, rats bite people directly or pathogens invade through trauma and cause infection. According to data analysis, the number of deaths caused by diseases spread by rats has far exceeded the total number of deaths in all previous wars since the beginning of history. The plague has brought great disasters to mankind. For example, the third plague pandemic occurred in the late 19th century and early 20th century, affecting more than 60 countries in the world and killing 12 million people. my country was also a plague-stricken area in the past, claiming countless lives. So far, the total number of people who have died from plague in the world has exceeded 200 million.