As a general rule of thumb, you should apply mulch at a depth of 2-4 inches. Use less mulch for heavy, clay soils and more for lighter, sandy soils. Color enhanced mulch will typically maintain its color for more than one year, compared to other mulches, which turn gray or white after just a few weeks. Once the colors dry, they are on the mulch permanently. You will not experience any color wash-off or leaching.
Termites tend to interact with most forms of cellulose wood fiber regardless of the source or type.
If homeowners have problems with termites in their area, the best course of action is preventative care. When placing mulch around a home, common recommendations include keeping a six inch trench between the top of the mulch and the veneer on the house. An additional preventative measure includes dusting the trench with a termiticide on a yearly basis. Using mulch will actually help your plants grow better by inhibiting weed growth and preventing weeds from breaking through the soil. Mulch also keeps the soil surface cool and helps it retain moisture.