Van from Scottsdale, Az writes
In AZ we have rock landscaping about 4" above the soil.
Taurus SC does not bond to rock, it bonds to soil, so if you fill in the trench with rock gravel, Taurus SC will not stick to it and it will leave you with a 6"x6" area of completely unprotected surface that the termites could pass through to get directly to your home. We understand that the digging of the trench is a pain, but it must be done each time and it must be backfilled with soil, and the soil that is backfilled must be treated as well if you want your home properly and completely protected.
Answer last updated on: 10/19/2016
