Fipronil is a broad use insecticide that belongs to the phenylpyrazole chemical family. Fipronil is used to control ants, beetles, cockroaches, fleas, ticks, termites, mole crickets, thrips, rootworms, weevils, and other insects.Fipronil is a white powder with a moldy odor.ipronil is used to control ants, beetles, cockroaches, fleas, ticks, termites, mole crickets, thrips, rootworms, weevils, and other insects. Fipronil is a white powder with a moldy odor.
While the cause of rheumatoid arthritis is not clear, it is believed to involve a combination of genetic and environmental factors. The underlying mechanism involves the body's immune system attacking the joints. This results in inflammation and thickening of the joint capsule. It also affects the underlying bone and cartilage.
It can also be caused by a bacterial infection from an open wound or an opening from a surgical procedure, such as knee surgery. In adults and children, common bacteria that cause acute septic arthritis include Haemophilus influenza, staphylococcus, and streptococcus.These foreign invaders enter the bloodstream and infect the joint, causing inflammation and pain.ther infections, such as those caused by viruses and fungi, can also cause arthritis. Viruses include: 1  Hepatitis A, B, and C. 2  Parvovirus B19. 3  Herpes viruses. 4  HIV (AIDS virus). 5  HTLV-1. 6  Adenovirus.