Yes. Cake mixes have flour and old flour can get "weavells" not sure if spelling correct. These are microscopic tiny black/brown bugs and can be seen in white flour as greyish specs. Ugh!
Ask.com has appropiate pictures.
The bets place to look for pictures of insect bites is to go to the library and look at the popular medical text books they have. The reference section is best for detailed images.
Google Images.
The bugs that blue birds primarily eat are grasshoppers, crickets, and beetles. There are photographs of these bugs widely displayed throughout the Internet.
No, it just dries up and carbonises if hot enough
beetles
There is one on Youtube.
put it in the freezer for a few days and then sift before use
One can message their local pest control company and request them to mail or e-mail you some information and/or pamphlets about bed bugs. These will include a description and some pictures to be able to use as an accurate account for bed bug comparison.
Bollweevil look like brown bugs with a sort of horn on their heads. These bugs are often found in food pantries and can damage flour or corn by eating and defecating in the package.
Yes, you can. It keeps the flour fresh and free of bugs and weavils.