los ntawm Donald Lewis, Chav Haujlwm Saib Xyuas Kab Tsuag

"Nws yog dj vu dua ib zaug ntxiv." Hauv Horticulture thiab Home Pest News, Plaub Hlis 3, 1991, peb tau muab ib tsab xov xwm txog kev phom sij ntawm kev siv "insecticide chalk" tsis raug cai rau kev tswj kab tsuag hauv tsev. Qhov teeb meem tseem muaj nyob, raws li tau qhia hauv California Environmental Protection Agency tsab xov xwm no (hloov kho).

CEEB TOOM TXOG TSHUAJ PESTICIDE "CHALK": TXAUS NTshai RAU MENYUAM

Lub Chaw Haujlwm Saib Xyuas Kev Tswj Xyuas Tshuaj Tua Kab thiab Kev Pabcuam Kev Noj Qab Haus Huv hauv California hnub no tau ceeb toom cov neeg siv khoom kom tsis txhob siv cov tshuaj tua kab uas tsis raug cai. "Cov khoom no muaj kev phom sij heev. Cov menyuam yaus tuaj yeem yooj yim xav tias lawv yog cov tshuaj tua kab hauv tsev," Tus Tub Ceev Xwm Saib Xyuas Kev Noj Qab Haus Huv Hauv Xeev James Stratton, MD, MPH hais tias, "Cov neeg siv khoom yuav tsum zam lawv." "Nws yog qhov tseeb, kev ua kom cov tshuaj tua kab zoo li cov khoom ua si yog qhov txaus ntshai - thiab tsis raug cai," Tus Lwm Thawj Coj ntawm DPR Jean-Mari Peltier hais.

Cov khoom lag luam — muag nrog ntau lub npe lag luam suav nrog Pretty Baby Chalk, thiab Miraculous Insecticide Chalk — muaj kev phom sij rau ob qho laj thawj. Ua ntej, lawv tuaj yeem thiab tau raug yuam kev rau cov chalk hauv tsev thiab cov menyuam yaus noj, ua rau muaj ntau yam kab mob. Qhov thib ob, cov khoom tsis tau sau npe, thiab cov khoom xyaw thiab cov ntim khoom tsis raug tswj hwm.

Lub Koom Haum Tiv Thaiv Ib Puag Ncig ntawm Tebchaws Meskas tau ua ib qho kev tawm tsam rau ib tus neeg faib khoom thiab tau muab ib daim ntawv txib rau Pretty Baby Co., hauv Pomona, Calif., kom "tsum tsis txhob muag cov khoom tsis tau sau npe uas ua rau muaj kev phom sij rau kev noj qab haus huv pej xeem." Pretty Baby nquag muag nws cov khoom tsis tau sau npe rau cov neeg siv khoom thiab cov tsev kawm ntawv hauv Is Taws Nem thiab hauv cov ntawv xov xwm tshaj tawm.

"Cov khoom zoo li no tuaj yeem ua rau muaj kev phom sij heev," Peltier hais. "Tus neeg tsim khoom tuaj yeem - thiab ua - hloov cov mis ntawm ib pawg mus rau lwm qhov." Piv txwv li, peb cov qauv ntawm cov khoom muaj npe "Miraculous Insecticide Chalk" tau raug tshuaj xyuas los ntawm DPR lub hli tas los. Ob qho muaj cov tshuaj tua kab deltamethrin; qhov thib peb muaj cov tshuaj tua kab cypermethrin.

Deltamethrin thiab cypermethrin yog cov tshuaj pyrethroids uas tsim los ntawm cov tshuaj. Yog tias raug tshuaj ntau dhau, yuav ua rau muaj teeb meem loj rau kev noj qab haus huv, xws li ntuav, mob plab, qaug dab peg, tshee hnyo, tsis nco qab, thiab tuag vim ua tsis taus pa. Kuj tseem ua tau rau muaj kev tsis haum tshuaj loj heev.

Cov thawv xim uas feem ntau siv rau cov khoom no tau pom tias muaj cov hlau lead thiab lwm yam hlau hnyav ntau hauv cov ntim khoom. Qhov no tuaj yeem yog teeb meem yog tias cov menyuam yaus muab lub thawv rau hauv lawv lub qhov ncauj lossis tuav cov thawv thiab muab cov hlau seem rau hauv lawv lub qhov ncauj.

Cov ntawv ceeb toom txog cov kab mob uas muaj nyob rau hauv cov menyuam yaus tau txuas nrog kev noj lossis kev tuav cov chalk. Qhov teeb meem loj tshaj plaws tau tshwm sim hauv xyoo 1994, thaum ib tug menyuam yaus hauv San Diego tau raug mob hauv tsev kho mob tom qab noj cov chalk tua kab.

Cov neeg siv khoom uas tau yuav cov khoom tsis raug cai no yuav tsum tsis txhob siv lawv. Pov tseg cov khoom ntawd ntawm cov chaw pov tseg khoom phom sij hauv tsev neeg hauv zos.