An insect repellent composition for repelling insects from mammals and vegetation. This composition comprises: dihydroxyacetone (DHA) and a carrier suitable for insect repellent compositions. DHA is the active ingredient and the composition is efficacious in repelling insects.

The present disclosure relates to methods and devices for controlling arthropods, including insects and arachnids in an environment. The methods generally comprise: generating a near-ideal gas Purified Hydrogen Peroxide Gas (PHPG) that is substantially non-hydrated (e.g., in the form of water in solution or water in solution or water molecules bonded by covalence, van der Waals forces, or London forces) and substantially free of, e.g., ozone, plasma species, and/or organic species; and directing the gas comprising primarily PHPG into the environment such that the PHPG acts to control arachnids in the environment. In certain aspects, the arachnids may be totally or partially killed.

The corona-effect reactor includes: a reaction chamber including an air supply port, an exhaust port, an electrode port, and a reaction cavity, the supply port, the exhaust port, and the electrode port each emerging into the reaction cavity; an air supply device configured to be fluidly connected to the air supply port by means of a guide duct and to supply air to the reactor; a high voltage electrode configured to be at least partly inside and to cooperate with the electrode port; a power supply configured to supply power to the high voltage electrode as well as the air supply device. A ratio between a cross section of the guide duct and a cross section of the reaction cavity being between and 3/10, and for example .

As described below, the present invention features methods and compositions for controlling a honey bee parasitic mite or for the treatment or prevention of a parasitic mite infestation in a honey bee hive. In particular embodiments, the invention provides a miticidal delivery device, wherein the device is a corrugated strip comprising a liquid composition comprising at least about 15% potassium salts of hop beta acids, solvent and an emulsifier.

One nonlimiting variation of a detection arrangement includes one or more sensors each structured to detect at least one biochemical substance indicative of biochemistry of one or more target insect species and provide a corresponding sensor signal, a controller responsive to the sensor signal of each of the one or more sensors to determine if the one or more insect species are present and generate a corresponding output signal, and an indicator responsive to the output signal to indicate the presence of the one or more insect species.

Devices and methods for the control of pests using the vapors of a pesticidal composition. Compostions, devices and methods for the selective control of pests while not harming one or more beneficial insects are also disclosed. In some embodiments, the pests are bed bugs, fleas, lice, ticks, or the like. In some embodiments, the pests are varroa mites and the beneficial insects are honey bees.

The insecticide nebulizer nozzle of the invention comprises a hollow base (1) and body (2), interconnected with each other, with ends (11 and 21) open for liquid/gas inlet/outlet. Said body internally surrounds a restrictor (5), an internal base (6) and a smooth tube (7), which together make it possible to spray a mixture of gas and liquid into small particles in a laminar regime. On the side of the body (1), there is a spigot (8) that allows the insertion of liquid near the inner base (6) of the nozzle. Through the inner base (6) the liquid is directed towards the end (21) of the outlet. After passing through the restrictor (5) and the internal base (6) the liquid meets the air at high speed and rotating, favoring its complete breakdown into droplets. The droplets are displaced by the smooth tube in laminar flow.