removing stuff from radiator

[coffeedart67]

When I got the radiator back from being boiled (2 years ago)I taped off the bottom hose fitting, thought I didn't need to do the top hose fitting, oops wrong. Mice got into it and used it for food storage. Turning it back and forth you can hear seeds rolling back and forth. turning it upside down I can get some of the stuff out. It is mostly small seeds(about 1/8") and grain husks, no signs of a nest, how do I get this stuff out?
Thanks
Aaron

 

[ef8340]

have you tried a water hose in the bottom? im thinkin if you turn the rad upside down and let the water run through it. it should remove most of it

 

[coffeedart67]

Did that and it removed the lighter grain husks but still have the seeds. At least I should consider myself lucky that there is no evidence of a nest.