I’ve seen dog poo wormeries advertised, I’m guessing they’re environmentally sound as I don’t think they require any chemicals, just worms. It does state that the end product should not be used anywhere where children might play.
I also found this:
“In the city,” Mike said, “Garbage collectors don’t want dog waste to go into the truck because it gets messy and the bags explode. The sewage people don’t want it down the toilet because it has a lot of grit on it and mucks it up. So there’s really nothing environmental that you can do.”
The solution, says Mike, is to compost dog waste in yard, using a old plastic garbage can. The folks at City Farmer developed the method, which is one of the most popular tips on the cityfarmer.org web site. The technique provides “a chance where people can have it slowly decompose in a yard and be environmentally safe.”
Here’s a step-by-step description:
Take and old garbage can and drill a dozen or so holes in the side.
Cut out the bottom (A keyhole saw works great for this.)
Dig a hole in the ground, deep enough for the garbage can.
Toss some rocks or gravel in the hole for drainage and position the garbage can so it’s a little higher than the soil level.
Place the lid on top (you might want to paint it with something like Dog Waste Composter.)
When you scoop some poop, put it in the hole and sprinkle in some septic starter (available at hardware stores) and add some water.
Within 48 hours, the septic tank starter, (which is non-caustic and promotes natural bacterial growth) will have begun its work and you can add more dog doo. You can then begin to add it daily. This waste biodegrades and flows into the subsoil.
Mike adds that you should not put the composted dog waste in your garden.
I hope that helps.....Christine