The Root Maker 1, 3, 5 gallon containers are of heavy construction, and can be used over and over for years to come. Concerning the air pruning holes, I suppose that it would be possible that a few could become plugged after some time. However, I cannot truly tell you if they will clog or not, because I have never had any get clogged yet, and I have been using Root Maker containers for the last five years. - Millet