Quick questions on venting

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Hey BP gang,

Two quick questions for anyone that is knowledgeable of range hood venting and/or laundry machine venting.

I had a contractor install a range hood in a unit recently and install venting to the outside of the unit.  I'm concerned that without a mesh covering the outside of the damper that bugs will be able to get through.  Recommend installing a mesh somehow or is that overkill?

Regarding the laundry vent, I was told by my inspector last year that a smooth wall metal type vent should be used and should only travel a short distance from the machine.  As you can see below the current vent is not smooth walled and travels approximately 8 ft before reaching a vent to the outside.  I'm thinking about cutting a hole in the wall right next to the dryer at the floor level and installing a much shorter vent going out that way.  Recommend this course of action?

Thanks!

Patrick