hello.....i live in Saskatoon. i moved into my home almost 20 years ago.i have inherited spider mites...they make growing anything on my deck impossible...they effect every part of my yard including the vegetable garden.....we went away for a few weeks some years ago when we returned the long grass had mounds of spider mites on it in several places.... we have washed them down daily for years but washing the whole yard daily is not practical...i have used safers soap...several kinds of homemade remedies....and at least 3 different kinds of insect spray ( not my first choice ).... i am up for trying anything....... HELP....HELP....HELP .