Bugs

I have fungus gnats in my organic containers. I have been vacuuming them many times each day and that seems to be keeping them down. I read that Mosquito Dunks will kill the Fungus Gnat larvae but it is not available in Canada. A friend pick some up for me when they visited the US. I don't have the dunks yet but look forward to receiving them.
Today I noticed as I was vacuuming the plants for gnats that there is now another insect crawling around the surface. These are smaller than the gnats and do not appear to fly. They are a light brown colour, almost white against the black soil. I looked at them with a magnifying glass and determined that they are not spider mites.

Any help is appreciated..

couple of inches of clean store bought play sand cured my problem with them.

put a inch or two of clean store bought play sand on top of your soil. if you used enough perlite when mixing your soil it should not be a problem.