When we arrive on your property to apply the Sevin mixture, the active ingredient has been diluted 50 times. This translates to: (*400 diluted 50 times) LD50 oral 20,000 mg/kg or (*2000 diluted 50 times.) LD50 dermal 100,000 mg/kg.
Compared to antifreeze, when we arrive on your property to apply it, Sevin is 250 times safer than getting antifreeze on your skin.
Carbaryl is also our chosen armor coat because of its low persistence in the environment and low toxicity. Detailed information of Carbaryl can be found in the links included on this website. Carbaryl has a safety record that spans over 50 years. Through this time span, the chemical has not been without complaints. However, complaints have spurred a multitude of studies that have found the complaints to be without reason to change the registration of chemicals. In Canada, the PMRA constantly reviews the registration of chemicals based on new studies.
The dose to which the environment, or an organism is exposed to a chemical may build up if this chemical persists in either the environment or the body of an organism. This persistence is the mechanism through which DDT bioaccumulated, causing damage to organisms high on the food chain. Carbaryl does not persist, or bioaccumulate. In fact, it is rapidly degraded by microbial activity and ambient pH.
When we apply Sevin we apply it with as little impact to the environment as possible.. Our method of application is a high volume low-pressure canon powered spray nozzle to minimize drift. In addition, we have sticking agents in the chemical mixture to ensure that the chemical sticks to the tree. We use a 1-ton truck, outfitted with a 300 ft hose. We do not spray in windy conditions, or close to open water bodies. Our spray technology means that there is minimal overspray. For what little overspray that does occur, the chemical nature of Carbaryl means that it is rapidly degraded.
For more in depth information about Carbaryl from a variety of sources, visit these links.
http://extoxnet.orst.edu/pips/carbaryl.htm
http://www.safe2use.com/poisons-pesticides/pesticides/misc/sevin-carbaryl-old.htm
http://www.hc-sc.gc.ca/ewh-semt/pubs/water-eau/doc_sup-appui/carbaryl/index_e.html
http://www.inchem.org/documents/pims/chemical/pim147.htm