weevils can eat insects, grain, and fruits and vegetables
Yes they can.
Weevils are commonly found in rice and grain products. The cannot bite or sting, and they do not carry diseases.
yes
And Take It with a Grain of Salt was created in 2002.
Depends how big the grain of salt is.
Well nothing as sodium chloride (salt) can't really dissolve anything especially if its only one grain, masses would definitely do quite some damage but 1 grain won't even kill a slug.
A grain can be a tiny piece of rock, yes. A grain can also be a grain of salt, meaning one 'pellet' of salt.
The expression "I took it with a grain of salt" meant "I didn't believe it".
What she says with a grain of salt
Different weevils will have different primary food sources. Weevils like the boll weevil feed on cotton buds and flowers well the wheat weevil lays eggs which feast on the inside of grain kernels.
One piece of sugar is a grain, which is also the same for salt. E.g., a grain of sugar or a grain of salt.