A customer had these tiny, off-white grubs eating away at the roots of their ornamental grasses & flowers that we planted...killing them. The grubs were about 1/8" long & there were lots of them. This property has no grass to mow...flower beds within built up paver block. What could these be insects be? Anyone else come across the same type before? How do I get rid of them or prevent them from coming back this year...ruining all future plantings? I'm working on sending a link to video I took last year....hopefully it'll work.