Are Rubber Mulches or Tires in the Garden a Good Idea?
...er mulch is not as effective as other organic mulch choices in controlling weeds. Furthermore, rubber mulches can attract insects (e.g., cockroaches), and they are highly flammable. In the long term, decomposing rubber mulch releases heavy metals and organic chemicals with unknown effects on human and environmental health. Other organic mulch choices, especially wood chips, are better performers and pose none of the environmental risks attributed...