+1 to all the suggestions of long handled poop scoops.
Whatever receptacle you use to then put it in, do make sure you empty it every 2 or 3 days because it's going to get hard to stomach as snogirl says. Also, double bag it because you don't want that thing splitting as you lift it/ tie it and it's a bit more pleasant for those collecting your garbage!
We don't put our poop in the general bin as it's too stinky. In our garden we use 1 x worm farm and 1 x bokashi bin, both inground with lids. The worms eat the poo and the bokashi ferments it into sludge. It's easy enough to empty the scoop into a hole in the ground, you just need to have space away from edible plants and water sources and then dig a hole and place a bottomless bucket with lid inside the hole. Bokashi is a bit more of a learning curve but seems to break it down quicker. With both options, when they are nearly full you just fill up to ground level with a bit more soil and dig a hole elsewhere. Put a board over or something for a little while so critters don't dig it up.