The chemical formula of deltamethrin is C22H19Br2NO3.
Deltamethrin is a neurotoxin acting primarily on the basal ganglia of the central nervous system. It causes repetitive nerve action through prolongation of sodium permeability during the recovery phase of the action potential in neurons.
Also know as DELT DUST, and it's the only thing that kills bed bugs.
I found a papper published by the university of Nebraska. It can be found at: http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1057&context=entomologyfacpub Deltamethrin shows it to be the best choice for for most strains of German cochroaches, though it is the least effective for the Ectoban-R strain, chlopyrifos semming to be the best for it.
Deltamethrin products are among some of the most popular and widely used insecticides in the world[citation needed] and have become very popular with pest control operators and individuals in the United States in the past five years.[1] This material is a member of one of the safest classes of pesticides: synthetic pyrethroids. While mammalian exposure to deltamethrin is classified safe, this pesticide is highly toxic to aquatic life, particularly fish, and therefore must be used with extreme caution around water. There are many uses for deltamethrin, ranging from agricultural uses to home pest control. Deltamethrin has been instrumental in preventing the spread of diseases carried by tick-infested prairie dogs, rodents and other burrowing animals. It is helpful in eliminating and preventing a wide variety of household pests, especially spiders, fleas, ticks, carpenter ants, carpenter bees, cockroaches and bedbugs. Deltamethrin is also one of the primary ingredients in ant chalk. (reference Wikipedia)
DDT, Drione, Deltadust, Diazinon, Dursban, Deltaguard, Deltamethrin, Diphacinone to name some.
You can either pull them off by hand or treat the goat with an appropriate chemical as in amitraz, cypermethrin, deltamethrin or flumethrin based products (but the majority of these may not be registered for use in goats).
You should probably avoid using pesticides in you garden completely or at least use one made for that purpose. It depends upon the product, some formulas contain multiple chemicals or stabilizers. Read the label or go to the product's site. I know of one product which contains deltamethrin and says on the website that it should not be used on vegetables. So, in general it should not be used on food meant to be consumed by humans. Some formulations may be long lasting and this is not what you want to put in your garden. You also should consider the value of the plants and their produce. If the garden is a hobby and not necessarily valuable for it's crop, then it would be best to avoid pesticides which are the last defense and are dangerous to the environment and to the person who sprays it and eventually eats it. It's safety depends on its danger to humans and its breakdown rate. By itself deltamethrin breaks down relatively quickly, but some products which use deltamethrin advertise themselves as being longlasting and therefore may not breakdown quickly In general it is safer than some pesticides because it is a synthetic pyrethroid. However, "Many pyrethroids have also been linked to disruption of the endocrine system, which can adversely affect reproduction and sexual development, interfere with the immune system and increase chances of breast cancer." (http://www.beyondpesticides.org/infoservices/pesticidefactsheets/toxic/pyrethroid.htm) "Acute exposure effects in humans include the following: ataxia, convulsions leading to muscle fibrillation and paralysis, dermatitis, edema, diarrhea, dyspnea, headache, hepatic microsomal enzyme induction, irritability, peripheral vascular collapse, rhinorrhea, serum alkaline phosphatase elevation, tinnitus, tremors, vomiting and death due to respiratory failure. Studies have shown many cases of dermal deltamethrin poisoning after agricultural use with inadequate handling precautions" (http://extoxnet.orst.edu/pips/deltamet.htm)
Delta Dust is an insecticide powder containing 0.05% deltamethrin. It is used to control a variety of pests, including ants, bed bugs, and cockroaches. The effects of Delta Dust include killing insects on contact and providing residual protection for up to 8 months when applied properly.
"Butox" is a trade name for a type of ectoparasiticide used in veterinary medicine to control ticks and other external parasites in livestock. The active ingredient in Butox products is usually deltamethrin, a synthetic pyrethroid insecticide.
Profenophos, which is an organo-phosphorous kind of insecticide, is the twenty-first century's pesticide of especial efficacy against rice black bugs. Previous studies indicate that those with the competitive edge in the twenty-first century involve the active ingredients deltamethrin, dimethoate, malathion, monocrotophos, or permethrin.
Bacillus thuringiensis or BT is a type of bacteria that's used to control the population of caterpillars. This natural pest control has been used by farmers and gardeners since the 1930s. Commercial preparations of the bacteria are still widely available today in feed stores and garden shops around the country. An alternative would be deltamethrin or permethrin dust.