Fact: spiders love vintage trailer water heaters.  

Every vintage trailer toolbox should have a flexible shaft brush designed for cleaning out the burner tube in your water heater.  It's a simple operation that keeps your water heater working right...especially after being stored for a few months (or years).

It also gets rid of rust or other corrosive deposits that build up and keeps it running efficiently and even prolongs the life of the water heater.