Hi can anyone give me info. I just purchased a home that is about 4 years old. I asked my landscaper to please put down black mulch. They did a great job. After the job was done they told me about their mulch and to make sure I turn it over ever 3 months because I will find beds and beds of Roaches. They stated they live not far from my home and every three months when they turn it over there are tons of Roaches. I have had black mulch in the last 2 of my home and never had this. I have turned over mulch I can't count how many times. Did I just ruin my home and what can I put in the mulch if anything that will kill the Roaches I don't want them to get in the home and I love my flowers. Am I doomed? Thank you for anything you can help me with in advance. I really appreciate it.