Yup, goofed on that.
Is that what the spider said?
In a manner of speaking, yes!
It makes sense but what about filling them with waste or burrowing under them? Handy trash can and seeking moisture? That's too easy. Lol
A tarantula's interaction with their water bowl basically stems from how they utilize their enclosure. In most cases, at least sometimes in my own collection and from pictures of other people's setups, the tarantula is using the entire space of the enclosure as its territory because they are unable to carve out a small space for themselves. In such a situation, the tarantula wants the whole space to be free from debris and standing water. That is why they fill it with dirt, or toss it around the enclosure. When they dig underneath a water bowl, they are interpreting it as the only suitable object to base a burrow on. Burrowing tarantulas like to dig underneath objects for the added structure and as a way to hide the entrance. The best way to prevent a burrowing tarantula from dirtying up its water bowl is to provide it the means to dig underneath an object in the enclosure and wait for it to finish its renovations before adding the water. I provided a description on how I accomplish that in the Terrariums forum in a thread called "The Aphonopelma Tank."
No one knows- we all have ideas, but that’s it.
My suggestion is to use interpretive dancing to communicate with her.
If you need solid answers, then you should probably put the work in to come up with your own interpretation of the behavior.Why would they fill it with poop and boluses? Do they want festering slime? Do they think the water will wash it away?
If they don't like standing water, why leave it and choose to burrow underneath a pool of standing water? Do they not make the conection between the bowl and water? I don't know, man. I need solid answers...
You realize I'm messing with you, right?
I have found that having the dish close to the sides of the enclosure it not really gets filled, as in construction worker, it's when the T travels around the perimeter of it's boundary it climbs over the dish, as it's in the way, in doing so collects water from the dish. Next time around it has damp substrate to deposit in the dish and also collect more water, and so on and so on. After many circuits around the tank the dish is full. When we look in in the morning, moisture has evaporated from the dish leaving a nice dish full of dry substrate. Tipping over the dish is probably just simply the dish being moved and knocked over during nightime manoeuvres. I found that having the dishes away from the edges, even close to the hide entrance, they tend to be left alone.