Bacillus thuringiensis (Bt)? (in the pest control form it is known as Thuricide) is a naturally occurring bacterium found in soils throughout the world. The Hi Yield Thuricide Concentrate is not organically certified and therefore would not be appropriate for an organic garden. However, we do offer the Southern Ag Thuricide BT Caterpillar Control which is OMRI certified and would be the appropriate Thuricide product for your organic garden. Be sure to read the Product Label before use.
It is recommended that you use a mixed gallon of Thuricide Concentrate within 24 hours. It will lose its efficacy if used after that time period.
Thuricide Concentrate should be applied when pest activity is first observed, and then every 5-7 days thereafter as needed.
Once the Thuricide Concentrate has been mixed, it must be used or discarded within 24 hours.
Natural Guard Caterpillar Killer Spray with Bt contains naturally occurring bacterium found in soils throughout the world that is not labeled to harm songbirds, other birds, wildlife or beneficial creatures when used as directed on the product label. It is best to apply when they are not in the area and hope they do not return until dry. Once the product has dried, it only has a toxicity level of that to kill something as small as an insect, and only those specific insects on the label.
According to the Natural Guard Caterpillar Killer Spray with Bt product label, always shake or stir this product thoroughly before use. Partially fill a hand pump sprayer with water before adding the application rate amount of product, then mix in product thoroughly and add the remaining amount of water. Spray leaf surfaces thoroughly, top and bottom, for complete control. Agitate regularly while spraying. Use all of the spray mixture within 24 hours.
Fruits and Vegetables: 1.5 oz. per 3 gallons of water (1 tbsp per gallon)
Shade trees and Ornamentals: 2 oz. per 3 gallons of water (4 tsp. per gallon)