I'm probably the last professional lighting guy here to have not developed a maintenance program for lighting systems. But I've seen the light. I realize it's long overdue. So I'm making a program right now for our clients. I expect we'll do this on an annual basis for most customers. Below is a list of items that I came up with for this service. I want to run it by you all. Prune shubs/trees away from light fixtures Clean lenses Clean housing / caps if needed move fixtures back away from shrubs / trees that have grown Re-program / adjust timer Clean out transformers of cob webs, dust, dirt, wasps nests, etc. Check & tighten terminal block in transformer Check wire connectors Check for proper light output from fixtures Change Bulbs on halogen systems (for a charge) Re-aim spot lights Re-straighten pathway lights Measure load coming into transformer Clean screens on well lights Re-grease sockets on path lights or MR-16 sockets, etc. as needed Clean debris away from fixtures Check operation of on/off cycle Install protective coating on lenses (e.g. Rain-X) Replace fixtures as needed under warranty Anything else you'd add? .