FAQs

Herbicides and Other Chemicals

All chemicals are assigned Lethal Dose (LD 50) numerical values through certain testing procedures. What LD 50 means is the dose or amount of a pesticide which can kill 50% of the test animals when eaten or absorbed through the skin. LD50 is expressed in milligrams of chemical per kilogram of body weight of the test animal (mg/kg). The lower the LD50 the more acutely toxic the chemical.

Chemical Name	Lethal Dose (LD 50)	Half Life
Gasoline	19	N/A
Caffeine	190	N/A
2,4-D	300 - 1,000	7 to 28 days
Aspirin	1240	N/A
Banvel	1700	5 months
Table Salt	3320	N/A
Telar / Glean	5545	3 months
Roundup	5600	7.5 days
Tordon	8200	5 months / pint