You pour it slowly into the skimmers and it stays in the filter
As long as you are using the food grade version of diatomaceous earth, it will not hurt you. However do not take the pool grade version.
A backwashable DE Filter. Diatomaceous Earth is the proper name.
Diatomaceous Earth, commonly known as DE, can be found in any home improvement store in the pool supplies section. Although it has many other uses, it's commonly used for swimming pool filters.
Sand can be removed by disassembling the filer and spraying with a hose. Bear in mind, most pool filters require "sand" to run. They have, in the filter compartment, a fine sand like substance called D.E. (Diatomaceous Earth)
There are many different people who have used diatomaceous earth just for those reasons. Just make sure you use the food grade version for diatomaceous earth.
No - diatomaceous earth is a pool cleaning chemical, not a dog shampoo. I don't know why you would want to put diatomaceous earth on your dog, but whatever you are trying to control or treat with this, there are much safer and more effective medications available from your veterinarian for it.
You do not need to remove it.
This is a bad idea. Diatomaceous earth (de) will go right through a sand filter. It will end up back in the pool and then it is almost impossible to get out. Sand goes in sand filters, de goes in de filters.
Yes if you add too much or add it before it can dissolve it will end up sitting on the bottom of the pool.