When dealing with how to get rid of cockroaches at home, it's essential to recognize that alternative methods might not match the immediate effectiveness of store-bought insecticides. These approaches include using a soap and water spray, which can eliminate cockroaches within minutes, albeit they may remain active initially. Another option is diatomaceous earth, which dehydrates cockroaches over several days. However, caution should be exercised with boric acid due to potential harm to children and pets when mixed with food. For significant infestations, consulting a pest control professional is advisable to identify the cockroach species and recommend the most suitable treatment.