TBH is not maintenance free. We need to look after them. Example, a TBH being occupied by ants needs to be cleaned up. One of the extreme cases, we need to refurbish the TBH.
This is one example.
This TBH was cleaned and relocated recently. Unfortunately, upon our visit on 11/2/2012, it is occupied by ants again :(
I too the opportunity to refurbish the TBH. I need to clean it from the ants and also fix the legs for this TBH. Previously, we use a "table top" to place the TBH. I hope I can squeeze a bit of time this coming days and reinstall it next weekend.