What is in Foray 48B

& DiPel 2XDF ?


The list of ingredients of all pesticides formulations are confidential business information protected under the Federal Pesticide Control Products Act sections 43(4) and (5).  Registration of pesticides in Canada is the responsibility of the Federal Pest Management Regulatory Agency (PMRA).  PMRA has access to all confidential information required to make registration decisions and they review the required test data of the individual ingredients, the active ingredient and the formulation as a whole.  See PMRA Btk Fact Sheet for a more detailed explanation.  The manufacturer has provided us with a general description of the contents and it is summarized here (Source Valent Biosciences Inc. - Foray/Dipel Technical Manual). Please note that DiPel 2XDF is a water based product and does not use mineral oil as a carrier as is described in the Technical Manual for other DiPel products used in forestry applications. 


  • From Foray 48B's Material Safety Data Sheet:  97.9% Water (90%) and inerts (7.9%) and 2.1% Btk

Use on Certified Organic Farms

  • Both Foray 48B and Dipel 2XDF are OMRI Listed for use in certified organic production or food processing (Current OMRI certificate).


"All Bt products, including Foray and DiPel, are produced in a similar fashion.  The Btk is grown in large enclosed fermentation tanks.  Foray and DiPel are produced using ingredients and a technology which are similar to those used to make beer or spirits.  During fermentation, the bacteria (Btk) reproduce in a pre-sterilized growth medium containing basic food sources, such as corn, potatoes, grains, etc.  After the fermentation process is complete and the bacteria are grown, the fermentation material, including the Btk, is collected.  This material becomes the basic ingredient of Foray and DiPel. 

This basic ingredient is composed of the Btk, which is the active ingredient, and the residual fermentation growth material and water.  The water and residual fermentation growth material referred to as "inerts" or inactive because they are not "active" against insects.  Several other inerts are added to this fermentation material, Btk and water, to make up the final formulations of Foray and DiPel.  These other ingredients comprise a small proportion of the total formulation.  In fact, nearly 90% of Foray 48B for example is composed of water, the residual fermentation growth material, and the Btk (and one other inert which is a food-approved carbohydrate).

The other inactive or inert ingredients are added to maintain the quality of the Btk formulation, to make it easier to handle, and to protect the activity of the Btk.  Some of these ingredients help ensure the microbial quality of Foray and DiPel by acting to control the level of possible contaminating natural micro-organisms.  These ingredients, added in very minor amounts to control contaminating bacteria and molds, are also used in many foods in Canada and the U.S. for the same purpose. 

All inert ingredients in Foray and DiPel formulations are included in 40 CFR 180.1001.  This list has been designated by the US EPA as "exempt from the requirements of a residue tolerance on raw agricultural commodities."  Valent verifies that none of its Btk formulations contain toxic inert ingredients, such as benzene, xylene, or formaldehyde

Additionally, and of considerable importance, not just the Btk powder itself, but our final end-use formulations are tested toxicologically.  In this process the safety of both the active ingredient and inerts are assessed and quantified."

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Contact Tim Ebata if you have comments on the presentation of this information.

BC Ministry of Forests, Lands & Natural Resource Operations
Resource Practices Branch
P.O. Box 9513 Stn. Prov. Gov.
Victoria, BC
V8W 9C2

Section phone: (250) 387-8739
Section fax: (250) 387-2136