Silicone spray and graphite powder are both solid ideas. I've used silicone spray myself, and it definitely helps, but I did notice after a while it t...

That's a solid suggestion about gravel and drainage channels. I've actually done something similar in my yard—dug shallow trenches filled with gravel ...

I ran into the humidity issue too—especially after heavy rains. Ended up placing a small container of silica gel packets near the sensors. Sounds weir...