Depending on the strength of your poop projector, you could use the crappy cheap water bottles and score the outside of it and/or cut off the top. On landing on a hard surface they split and splatter. This will also allow for pretty good crap fired/crap on target ratio. If you have more of an area target in mind, consider using a slightly more solid mixture in your manure missiles, and place a wax coated m80 with fuse cord (time according to desired burst height. Some math and experimentation suggested here. Don't wait till its time to fertilize the field to do your charts.) If your working in a more direct fire role, see Ammorn's post. Good luck in your doge dung discharging.
Also, depending on your dog, you may increase potential fertilizing potential through changing your dog's diet. Remember to pack the packages per your shit sender's potential. Bursting potato gun barrels are never fun. Especially with these types of loads.
Depending on the strength of your poop projector, you could use the crappy cheap water bottles and score the outside of it and/or cut off the top. On landing on a hard surface they split and splatter. This will also allow for pretty good crap fired/crap on target ratio. If you have more of an area target in mind, consider using a slightly more solid mixture in your manure missiles, and place a wax coated m80 with fuse cord (time according to desired burst height. Some math and experimentation suggested here. Don't wait till its time to fertilize the field to do your charts.) If your working in a more direct fire role, see Ammorn's post. Good luck in your doge dung discharging.
Also, depending on your dog, you may increase potential fertilizing potential through changing your dog's diet. Remember to pack the packages per your shit sender's potential. Bursting potato gun barrels are never fun. Especially with these types of loads.