The best way to cut invasive bamboo which requires total eradication is through the use of a chain saw, weed whacker, Swedish brush axe or pruning shears. However, the techniques for the removal of bamboo versus the pruning or trimming of bamboo are quite different.
When trying to eliminate an area where invasive bamboo has taken root, the most proven technique consists of cutting the bamboo stalks as close to the ground as possible. Once this has been completed, leave the stalks alone for a span of 3 or 4 months and allow the plant to set up shoots of new growth. Spray these new growth shoots with a herbicide that contains a two percent rate of glyphosate and leave them for another 4 to 6 months. After this time, the shoots will look brown and dehydrated. Simply cut out the rest of the plant to remove it completely.
In the case of pruning or trimming back bamboo, it is best to use a pair of pruning shears. Try to prune back the plant at just above the nodes where the branches extend out from the main bamboo stalk. Once cut, the stalk will stop growing. It is best to wait to trim bamboo back until winter after the stalk has stopped growing and expanding as cutting back too early could kill the plant.