Txhua tus txiv neej nyob rau hauv tus txheej txheem ntawm loj hlob ntau cov qoob loo muaj mus fim txhua hom ntawm cov nroj tsuag pests. Tej zaum qhov nto moo tshaj plaws ntawm lawv yog Colorado qos beetle, uas yog muaj peev xwm ua kom cov tub ntxhais hluas tua ntawm qos yaj ywm nyob rau hauv ib qhov teeb meem ntawm hnub. Vim tias cov zaub no feem ntau yog zus ntawm no feem ntau, nws tsis yog xav tsis thoob uas tshuaj lom rau Colorado qos beetle yog ib txwm nyob rau hauv kev thov rau ntawm txee ntawm khw muag khoom noj.
