I'm looking for information on this trap, I found a couple of milk crates full of older traps and was thinking about cleaning them up a bit(wd 40 and a soft brush?) and making a 'cool trap' wall in the shop.

In my opinion, I wouldn't do too much clean up on your collector traps as it tends to decrease the value.

Remove loose rust and dirt with warm water but do not remove the patina.

Thanks, so something like a tooth brush and wd40 is to much?