I use Malathion. It is an insecticide as well as miticide and seems to work well, can be found easily in Canada and doesn't require full suiting up and masking to use it safely. It does stink tho. I don't use it in the house-rather in the greenhouse or place the plants outside to spray them first.
Glad it worked, but it does not seem to be a mitice: Spider Mites
If you happen to have rhubarb plants, put the leaves in a pot and cover them with water. Bring to a boil then simmer for a while. Strain it when cool, then add a few drops of hand or dish soap and a tablespoon or so of rubbing alcohol to the spray bottle. I have been using this for all the bugs. I finally got the scale and mealy under control. It seems to keep fairly well.