The short answer is: Yes.
The long answer is: There are some specific techniques and processes to be applied, depending on what kind of sanitizer(s) you're presently using, the type of system you have, and your "numbers"—your water testing results.
If you'll post some specifics we will be in a much better position to advise you.

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My pool gets installed this week. I want to do the BBB method, but pool company gave me a big box of pool chemicals. I'd like to use those up so they don't go to waste. I will stear clear of the chemicals you guys mentioned. Thanks for your help, this place rocks!

Either pour it slowly into the skimmer and let it dissolve in the filter (keep pump running and don't backwash for about a week or you'll throw it right out, though.) Or, you can fill a stocking or old sock with it and hang it in front of a return jet. Regardless of how you decide to add it, wait a week and then test for it before deciding if you need to add more. Better to gradually get to your target than overshoot because the only way to correct high cya level is to do a partial drain.
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