Cockroaches are not attracted to onions but they have no trouble with eating them. Some people also use a mixture of onion and cayenne pepper to kill cockroaches but this is really not that effective. Onion helps to repel cockroaches only due to their strong pungent smell but that smell can evaporate quite easily.
Do onions repel cockroaches?
Onion, Garlic And Pepper These common kitchen ingredients can mix together to form a smell that cockroaches hate, according to India Today.
How do you kill roaches overnight?
Aside from buying any of the various gels, sprays and other roach-killing products on the market today, another overnight approach is dusting with boric powder, flour and cocoa powder (use in a ratio of 4:2:1, respectively).
Do roaches hate vinegar?
Distilled vinegar does not kill or repel roaches, making it completely ineffective. Distilled vinegar will help keep your kitchen clean, giving cockroaches less to snack on.