Rice weevils are a serious stored product pest, and if left unchecked, they have the ability to compromise food supplies on a massive scale. They are known to contaminate bird seed (specifically sunflower seeds), corn, wheat, rice, beans, nuts, cereals, stored cotton, along with grapes, apples, and pears. In southern states, adults may infest crops out in the fields and contaminate food processing facilities when the infested crops are brought in.
They are strong fliers and are attracted to light. If the adults are disturbed, they play dead by bringing up their legs against their body and falling over. Rice weevils often infest the pantries of homeowners when the homeowners unknowingly purchase products from the store that are already infested.