Saw post of people grilling salmon. Look like they where grilling on screen with 1/8" holes. Where can I find material like that and is it tough to keep clean?

Google frog mats.  I suspect that is what you're looking for.   I did a quick search, lots of mention of them on this site, no reviews yet that I saw.   I do find them to be cumbersome to clean, but they do a nice job for more delicate items like salmon.   

DK

Q-Matz is another brand of similar products. I know that you can buy Q-Matz in custom lengths, not sure about Frog mats. I cut them to a size that fits inside a standard 13x18 half-sheet cookie pan that I use to soak them in when they get gunked up. Then just wipe off with a sponge and let dry.

I cut them to a size that fits inside a standard 13x18 half-sheet cookie pan that I use to soak them in when they get gunked up. Then just wipe off with a sponge and let dry.

Well that's a good idea, bregent.
That beats me taking them to the car wash and spraying them on the car-mat clip.

You can buy them on ebay from China for $1.50 per sheet.

I throw them in a bus tray and soak in hot soapy water for a few hours.  Then I scrub them with a brush while still in the water.  Turns out to be pretty easy clean.

You can buy them on ebay from China for $1.50 per sheet.

I throw them in a bus tray and soak in hot soapy water for a few hours.  Then I scrub them with a brush while still in the water.  Turns out to be pretty easy clean.
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What brand or name of seller would be appreciated.  Was not able to find.

I tried these copper grill mats on the gasser for whole trout and it was amazing.  Highly recommend but have no idea how well they will work on the smoker