Non posionous unless you get hit by it. Steel shot with express loads. T shot is a BBB size. Better darn well make sure the stock is up tight to the shoulder or you be hurting the next day. The shells have no shock absorbers either. I have to take those amour plated hook bill birds. I can take out birds at about 100 yds if I get a good aim. So tree top high ones don't have a chance. Those darn Blue Darters are extremely hard to hit at times as I got to watch where I shoot.
I only rattled the neighbor's garage roof once and it was about a 1500 ft out as the shot fell but boy did the feathers fly.