I try to avoid the chems as much as possible. I'm not scientific or knowledgeable enough
to know what will break down and what won't or how much of what to make it break down.
I don't take lawn
clippings from someone that uses chemicals on their lawn. I will take their leaves though. I take newspaper
This year, I scored spoiled hay and straw
for 50 cents a bail and got as much as I physically could by myself. I could be wrong, but I don't think
it's sprayed as much as other crops.
I wouldn't take wood that still has a heavy layer of latex paint on it, it peels easy and, yuck, don't like seeing it in the soil, plus the chickens
think it's food. I will take old barn siding, as usually most of the paint is gone and it has many different uses for me.
When I first started, I would buy what I needed when I needed it. That actually seemed to slow me down, usually from lack of funds. Now, I have learned to get what's available and stockpile so it's there when I need it, even if that is next year.
Oil soaked skids or have a funny smell, no way.
I think you'll need to figure out what you are comfortable with. You said "ad for free organic waste", you're not going to get organic from anyone that truly understands organic.
What are your thoughts?