How to kill mites for good?

How do mite removers kill mites?

• How to chemicals like oxalic acid, exterminate mites?

• Answer:

  OK, It`s estimated that ( 48200 ) species of mites have been detected on the planet ! OXALIC ACID ( example for you below ) - Treatment with Oxalic Acid: Oxalic acid is a short-lived treatment that only kills mites that are living on the bees (ie. those in a phoretic state). It does not kill mites that are in the brood. When there is brood present in a hive, only about 15% of the mite population are normally on the bees (ie. the rest, 85% are in the brood). It follows, therefore, that oxalic acid works best on colonies that are broodless at the time of treatment This is the ONLY CONDITION (broodless) in which oxalic acid should be used. It can of course be used on swarms (both natural or artificial) if they suspected of carrying a heavy load of mites (normally they carry very few mites). Treatment should be delayed until colonies are in a broodless state. In our area, this does not usually occur until mid-December or even January. After the 'Apiguard' treatment (in August-September), it is recommended that the catch tray should be removed, the insulation taken out of the cover board and some top ventilation re-instated. This will make me hive much cooler (I know this will horrify some people) and ensure the cessation of brood-rearing as the weather gets colder. Discretion should be exercised with weak colonies. The treatment material is 3.2% oxalic acid in a 1:1 sugar solution. The recipe for making this is as follows:- Make up a sugar syrup consisting of 1 kg sugar in 1 L of water. To this should be added 75 gm of oxalic acid dihydrate and well mixed. This will make 1.67 L of treatment material. Accurate weighing of the oxalic acid is essential because under-strength will give a poor mite kill and over-strength may kill bees ! EXPLANATION/S OF OXALIC ACID - Preparation: Oxalic acid is mainly manufactured by the oxidation of carbohydrates or glucose using nitric acid or air in the presence of vanadium pentoxide. A variety of precursors can be used including glycolic acid and ethylene glycol. Approximately 120,000 metric tons are produced annually. Laboratory methods: Although it can be readily purchased, oxalic acid can be prepared in the laboratory by oxidizing sucrose using nitric acid in the presence of a small amount of vanadium pentoxide as a catalyst. The hydrated solid can be dehydrated with heat or by azeotropic distillation. Of historical interest, Wöhler prepared oxalic acid by hydrolysis of cyanogen in 1824. This experiment may represent the first synthesis of a natural product. Structure Anhydrous oxalic acid exists as two polymorphs; in one the hydrogen-bonding results in a chain-like structure whereas the hydrogen bonding pattern in the other form defines a sheet-like structure. Occurrence in nature Oxalic acid and oxalates are present in many plants, including black tea, and occur naturally in animals. Calcium oxalate is the most common component of kidney stones. Early investigators isolated oxalic acid from wood-sorrel (Oxalis). Its presence makes it dangerous to eat unripe carambola or monstera fruits. Members of the spinach family are high in oxalates, as is sorrel, and a, "steady diet of raw leaves," is not recommended. Rhubarb leaves contain about 0.5% oxalic acid and Jack-in-the-Pulpit (Arisaema triphyllum) contains calcium oxalate crystals. Bacteria produce oxalates from oxidation of carbohydrates. Oxalic acid may increase the leaching of radionuclides conditioned in bitumen for radioactive waste disposal. Applications: Oxalic acid's main applications include cleaning or bleaching, especially for the removal of rust (iron complexing agent), e.g. Bar Keepers Friend is an example of a household cleaner containing oxalic acid. About 25% of produced oxalic acid is used as a mordant in dyeing processes. It is used in bleaches, especially for pulpwood. It is also used in baking powder. After thermal decomposition and oxalate combustion, lanthanide oxalates convert to the oxides, which are the most common form in which the lanthanides are marketed. Miscellaneous uses: Oxalic acid is also used for cleaning 'grubbyness' from dirty leather to get back to the flesh of the leather, before reintroducing preservatives. Oxalic acid is rubbed onto completed marble sculptures to seal the surface and introduce a shine. Toxicity and safety In humans oxalic acid has an oral LDLo (lowest published lethal dose) of 600 mg/kg (human). The main toxicity of oxalic acid is due to the precipitation of calcium oxalate in the kidneys when urine becomes supersaturated with respect to this salt. Oxalic acid is also a metabolism product of the degradation of ethylene glycol if accidentally ingested and, as such, directly represents a danger for the kidneys in case of Glycol Poisoning.