Tus nqi ntawm 14 kHz lossis 17 kHz zoo li nrov. Lub suab emitted yog ib lub suab tas li - zoo li piiiiiiiiiiiiiiiiiiing. This is a recording of a YouTube yoov tshuaj tua kab mob.
Zaj dab tsi yog qhov zoo tshaj los tua yoov tshaj cum?
US pest chasers yog tsim los tua kab tsuag hauv tsev. Cov nas tsuag teb rau Teb Chaws Asmeskas nrog qhov zaus ntawm 60 kHz. Miv thiab dev tuaj yeem raug tshem tawm siv 22-25 kHz. Kab xws li yoov tshaj cum, tsev ya, Fleas thiab lwm yam teb rau 38-44 kHz.
Ua siab zaus tua yoov tshaj cum?
Tseem muaj ib qho teeb meem xwb. Cov kws tshawb fawb hais tias nws tsis muaj tseeb. Bart Knols, tus kws kho mob entomologist uas yog tus thawj coj ntawm pawg thawj coj saib xyuas ntawm Dutch Malaria Foundation thiab kho lub vev xaib Malaria Ntiaj Teb, hais tias tsis muaj "tsis muaj pov thawj tshawb fawb dab tsi" uas ultrasound tua yoov tshaj cum.
HZ ua yoov tshaj cum?
Lub suab nrov ntawm yoov tshaj cum yog tshwm sim los ntawm kev vibration ntawm lawv tis, thiab hu ua lub suab nrov. Lub suab nrov ntawm poj niam yoov tshaj cum yogtxog 400 Hertz, thiab cov txiv neej muaj qhov hnov lus uas tau xaiv xaiv rau ntau zaus ntawm 300 txog 400 Hertz.
tsw tsw yoov tshaj cum ntxub?
Ntawm no yog cov tshuaj tsw qab uas pab tua yoov tshaj cum:
- Citronella.
- Clove.
- Cedarwood.
- Lavender.
- Eucalyptus.
- Peppermint.
- Rosemary.
- Lemongrass.
