Pond Boss Forums POND CONSTRUCTION Creating habitat Truck Tires for structure

I've used old tractor and truck tires for a number of purposes over more than the last 50 years.

Going back at least 40 years, one of my concerns, for which nobody ever seems to have an answer -- what do they do to the environment as they deteriorate and decompose?

Do they contaminate our ponds? Do they poison our gardens? If so, are the contaminants and poisons at a level that will damage our grandkids?

If I burn them instead, what are they doing to the environment? If I pay the $5 fee to have then punched for the landfill (so they can't hold water to breed mosquitoes), am I doing anybody any good?

I sometimes wonder if being a caveman included less stressful life questions.