My fuel goes through 4 filters before it reaches my carbs!

1)The fuel pickup line inside my 1 gallon fuel jug has a built in filter in the "clunk"
2) I have an inline filter between the fuel jug and the pump
3) The fuel filler fitting on the line after the pump (inserts into the plane's fill line) has a built in filter
4) On all of my aircraft I have a filter between the fuel tank and the needle valve

(1) & (2) above is admittedly double filter between the 1 gallon jug and the fuel pump, and I could get rid of one of those. (3) above filters anything I suck back into my 1 gallon fuel jug, so if debris gets into my aircraft's fuel system somehow, it will hopefully get removed by this filter before entering my pump while I defuel the plane. (4) above keeps any debris in the aircraft's fuel tank from getting to my carb, and it provides an nice place to fuel and defuel the plane (disconnect this filter and pump fuel in/out of the clunk line in the tank).