Raincatcher requires little maintenance.  Any build up of leaves on the sieve are easily removed.  This stainless steel sieve is removable and easy to clean, and it should be checked periodically.  A layer of sediment will settle on the floor of the dump tank over time and this can be wiped and rinsed clean.  It is recommended to hose out the entire tank every 2 to 3 years.  The exterior only needs the occasional wipe with hot soapy  water and a soft cloth.  Metal scourers, etc, should not be used because small pieces of iron will remain on the surface, and rust stains can appear on these spots.