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Re: Pill bugs/sow bugs


In a message dated 03/19/2001 5:49:49 AM Central Standard Time, 
grnstuff@swbell.net writes:

<< This is an extremely safe control for the above hungry critters, and it 
 DOES work! ix about 1 cup cornmeal with
 1 or 1 tablespoons powdered boric acid, and sprinkle wherever needed, in 
 pots or scattered among plants in your
   hosta beds. >>


I agree that Boric acid is safe relative to other chemicals but is not 
unharmful, listed below is part of the "Fact Sheet" covering it:

ACID

                       MSDS Number: B3696 --- Effective Date: 11/17/99 



                       1. Product Identification 

                            Synonyms: ortho-Boric acid; boracic acid; 
Borofax, boric acid (H3BO3) 
                            CAS No.: 10043-35-3 
                            Molecular Weight: 61.83 
                            Chemical Formula: H3BO3 
                            Product Codes: 
                            J.T. Baker: 0084, 0090, 0091, 0092, 4035, 5168, 
5599, 9820 Mallinckrodt: 1326, 1394, 2536, 2549, 2552, 7779,
                            7794 



                       2. Composition/Information on Ingredients 

                                    Ingredient 
                                                        CAS No
                                                                         
Percent 
                                                                              
               Hazardous
                                    Boric Acid 
                                                        10043-35-3 
                                                                         100% 
                                                                              
               Yes 




                       3. Hazards Identification 

                            Emergency Overview
                            -------------------------- 
                            WARNING! HARMFUL IF SWALLOWED OR INHALED. CAUSES 
IRRITATION TO SKIN, EYES AND
                            RESPIRATORY TRACT. AFFECTS CENTRAL NERVOUS 
SYSTEM, LIVER AND KIDNEYS.

                            J.T. Baker SAF-T-DATA(tm) Ratings (Provided here 
for your convenience) 
                            
------------------------------------------------------------------------------

----------------------------- 
                            Health Rating: 2 - Moderate 
                            Flammability Rating: 0 - None 
                            Reactivity Rating: 0 - None 
                            Contact Rating: 2 - Moderate 
                            Lab Protective Equip: GOGGLES; LAB COAT; VENT 
HOOD; PROPER GLOVES 
                            Storage Color Code: Orange (General Storage)
                            
------------------------------------------------------------------------------

----------------------------- 

                            Potential Health Effects
                            ----------------------------------

                            Inhalation: 
                            Causes irritation to the mucous membranes of the 
respiratory tract. May be absorbed from the mucous membranes, and
                            depending on the amount of exposure could result 
in the development of nausea, vomiting, diarrhea, drowsiness, rash,
                            headache, fall in body temperature, low blood 
pressure, renal injury, cyanosis, coma, and death.
                            Ingestion: 
                            Symptoms parallel absorption via inhalation. 
Adult fatal dose reported at 5 to > 30 grams. 
                            Skin Contact: 
                            Causes skin irritation. Not significantly 
absorbed through the intact skin. Readily absorbed through damaged or burned
                            skin. Symptoms of skin absorption parallel 
inhalation and ingestion. 
                            Eye Contact: 
                            Causes irritation, redness, and pain. 
                            Chronic Exposure: 
                            Prolonged absorption causes weight loss, 
vomiting, diarrhea, skin rash, convulsions and anemia. Liver and particularly 
the
                            kidneys may be susceptible. Studies of dogs and 
rats have shown that infertility and damage to testes can result from
                            acute or chronic ingestion of boric acid. 
Evidence of toxic effects on the human reproductive system is inadequate. 
                            Aggravation of Pre-existing Conditions: 
                            Persons with pre-existing skin disorders or eye 
problems, or impaired liver, kidney or respiratory function may be more
                            susceptible to the effects of the substance. 

For the entire sheet:
<A HREF="http://www.cc.nih.gov/cp/about_lab_med/boric_acid.html">
http://www.cc.nih.gov/cp/about_lab_med/boric_acid.html</A>
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