Mhahaha , Sorry just woke up and for a moment I though you said “Get the cat to take a crap in the HMD”, that would work to 
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LOL 
well it’s initially also about 37c so it might work- but I would personally preferably have my own fog
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It is still taught like so. At least in the middle sea countries and yea works amazing but would still not use on hmd xD!
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Thanks a lot for all the suggestions, reading this I remembered one thing I used that worked pretty well with my old Gear VR in the Note 4 days, and it’s this:
So basically a USB hand heater that costs 1 euro, cover it with a ragged sock or similar so that it doesn’t damage the lenses. It worked great on Gear VR back in the day, so yesterday I found it and tried it on the Pimax, i left it covering the lenses for 10 minutes and even though it still got some fog, it was a lot less and it lasted way less than if I’m not using anything.
I’m going to try a few more of those tricks to see what works best, thanks again for all the suggestions.
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And why can not make heating inside the headset? 
As it is done in the rest of the headsets. My Odyssey and lenovo Explorer never saw fog on the lenses, because they are always connected to the PC and they are always warm.
Gentlemen, an independent warming up of the helmet with hair dryers, cats and socks is, excuse me, the last century. A Pimax - headset of the new generation after all 
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All my pc’s have wire hooks glued on top to hold the hmd’s in such a fashion that the exhaust from psu’s can preheat the lens , works great
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I used previously a Vive with TPCast and didn’t have a problem with the lenses misting up although the battery was always disconnected when not using it so why I have a problem with the Pimax is a mystery. Maybe it has something to do with how it is strapped to my face.
I did do the GearVR lens mod so I had other lenses in the Vive, maybe that is the reason.
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That stuff doesn’t work to well from my experience…
Can I ask the original poster… Do you find its fogging up more when watching porn?
I would be looking to mod a 40mm fan somewhere on it
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Shove a silica gel pouch in the corners, double-benefit: blocks the distortion.
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Good idea! 
I could do something like that, but in my situation, I’d attach the hook to my desk. I’ve actually done that on the other side of my desk, to hold my earphones.
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Interesting, mind to share a pic of your setup?
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literally just some coat-hanger wire fastened to the top of a pc case so the headsets can dangle over psu exhaust fan , not possible on some cases though because the psu’s are low down
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Seekleer (Anti fog)
This has worked well on fogging. RainX also has had this kind of product for sky masks & such.
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Old motorcyclists trick to prevent the visor from fogging up is to wipe the visor with a water/dish washing liquid solution, or, believe it or not, with saliva.
I’m using a commercial product though, not bodily fluids.
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I’m happy to hear that the problems are so little. Pre heat HMD with hair dryer for 5 minutes before use
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Saliva works for diving masks too.
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Be careful with chemical anti fog solutions, most of these contains aggressive chemicals and are not suited for plastic lens, could ruin the lens trasparency…making non glass lens more opaque and this will increase the god rays effect.
Saliva is way more safer, and still effective.
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Shit!! I bought three sprays of anti-fog… how can I know that the spray can damage the lens?
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I bought this… but can damage the plastic lens and make it opaque?
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