[Jedd]

Sounds like it. I avoid runners, as the risk is just too high to recover them if they get away. Also in Australia most boo suppliers eschew running varieties, as suburbian horror stories abound.

As noted by dbcurtis, you need to have a physical barrier -- either metal (but that'll eventually corrode) or some very thick rubber (ditto), or concrete - to about 60cm depth, depending on variety. Alternatively they are typically stopped by roads and permanently running creek beds.

My clumpers (Bambusa oldhamii, B.multiplex, B. ventricosa, and B. gracilis) vary in height, but after 15 years the largest is, albeit a very dense, 1.5m diameter clump.