never strained mine......i just take a little cup, add a bit of water from the tank, toss the mysis in and swirl it around till they all separate out for a few minutes. if you buy the cheaper mysis it seems like you get alot of juice and bit of mysis. The better mysis like Hikari Bio-Pure Mysis Shrimp seem to be very clean and fully intact.
Thawing and rinsing is extremely quick and easy, that extra 10 minutes - during which you can be off doing other things in the meantime - has a huge influence on limiting nutrient additions to our tanks. Food is a major contributor of phosphate and nitrate additions to our tanks, and if not fed judiciously with an eye to limiting these introductions this alone can negate any and all nutrient export mechanisms in place..