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Off! (brand) Off! OFF! Unscented insect repellent. Off! (stylized as OFF!) is an insect repellent brand from American corporation S. C. Johnson & Son, produced in Finland. Its active ingredient is DEET ( N, N -diethyl- m -toluamide) or metofluthrin which is the most common ingredient in insect repellants. [ 1] It was first sold in 1957.
Insect repellent. A mosquito coil. An insect repellent (also commonly called " bug spray ") is a substance applied to the skin, clothing, or other surfaces to discourage insects (and arthropods in general) from landing or climbing on that surface. Insect repellents help prevent and control the outbreak of insect-borne (and other arthropod ...
Most projectiles used by terrestrial animals are liquids. Among invertebrates there are a number of examples. Velvet worms can squirt out a slimy adhesive fluid from glands on the sides of their head, and use it to trap their prey. The spitting spiders Scytodes can spit a venomous sticky fluid that traps its victims and also poisons them. [ 1]
Compound eye. A compound eye is a visual organ found in arthropods such as insects and crustaceans. It may consist of thousands of ommatidia, [ 1] which are tiny independent photoreception units that consist of a cornea, lens, and photoreceptor cells which distinguish brightness and color. The image perceived by this arthropod eye is a ...
Black widow spider bites. What they look like: When a black widow spider bites, it typically causes a painful pinprick sensation. The site of the bite then swells slightly and forms a red rash ...
The beetles' glands store enough hydroquinone and hydrogen peroxide to allow the beetle to release its chemical spray roughly 20 times. In some cases this is enough to kill a predator. [7] The main component of the beetle spray is 1,4-benzoquinone, an irritant to the eyes and the respiratory system of vertebrates.
The CDC recommends avoiding insect-borne illness by wearing insect repellent approved by the Environmental Protection Agency, wearing protective clothing and monitoring your household so that ...
Staphylinus major De Geer, 1774. Staphylinus unicolor Herbst, 1784. The devil's coach-horse beetle ( Ocypus olens) is a species of beetle belonging to the large family of the rove beetles (Staphylinidae). [ 2] It was originally included in the genus Staphylinus in 1764, [ 3] and some authors and biologists still use this classification.