You can bet on it. I know from being in the market garden industry, that everything you eat in the fresh produce department is literally coated in countless pesticide sprays.
Wash every fruit and vege as best you can before eating it. I certainly do.
This is why i grow my own veges as well and eat Organic foods. I'd rather have a few bugs havin a munch on my veges than eat the pesticide coated crap in supermarkets that(as Mr Skywalker so rightly pointed out) will make your nads fall off in 20 years!! That goes for meat as well, the amount of hormones and antibiotics injected into Chickens, Sheep and Cows in unreal......Kangaroo meat is the way to go. Same can be said for eggs.
Garlic is a champion in the mite department, i have found only one problem though: The garlic tends to die off a few weeks after you turn to 12/12 and you have to make sure you keep the room/growspace really clean to stop the buggers getting in on your hands or gardening tools. Always a good idea to scrub everything you use outside before you use them inside or have tools you only use inside. This is more of a problem if you have Sativas or plants with a really long flowering cycle as you have to keep your eyes on em and give them a thorough checking every day to stop infestation before it starts. If the plants are really healthy you shouldnt have a big problem if you do get a few mites, but as i have heard a million times "prevention is better than cure".