How to Bleach Wood With Oxalic Acid
Liquids, like water or pet urine, can seep into a wood floor and leave a brown or black stain. Bleaching the stain with a heated mixture of water and oxalic acid will remove the stain, leaving the natural wood colour. Oxalic acid is also useful to bleach stains on wood furniture, like those caused by a beverage container that left a water ring. Clean the surface to strip waxes and oils before applying oxalic acid to bleach a wood stain.More...
Varroa destructor is an external parasitic mite that attacks honey bees. The disease caused by the mites is called varroatosis.
Varroa destructor can only replicate in a honey bee colony. It attaches at the body of the bee and weakens the bee by sucking fluids inside bees called hemolymph. In this process the mite spreads RNA viruses like deformed wing virus to the bee. A significant mite infestation will lead to the death of a honey bee colony, usually in the late autumn through early spring. The Varroa mite is the parasite with the most pronounced economic impact on the beekeeping industry. It may be a contributing factor to colony collapse disorder (CCD). More...