Are these whiteflies?

I tried to take a picture, but my camera won't focus on something this small. It is a tiny winged bug, looks like a whitefly but its kinda brown in color. They like to sit on the leaves of my plants. It seems there's 2 or 3 every day, so I just smoosh them (They are easy to pin down.) I googled whiteflies, and these look like them except for the color. Should I be concerned? Any cheap pesticides for these?
 
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