I did a quick search on here and couldn't find a thread but I was wondering how thick of a layer of mulch do you all put down. My standard is 3". I am asking this because I have in ground and in wall pest control and the guy came today and told me I had to much mulch in my flower beds. I put 3" in mine and all of my customers flower beds. Then he told me not to have any touching the foundation of the house. He went on about about termites and mulch. So what is your standards?