Are these still good?

I have a box of a bunch of nutrients from when I used to grow back in 2016-2017 and most of the bottles are opened and more than likely junk. But these three all are sealed still never been opened, you guys think they are any good?
Cyco Zyme
Cyco Suga Rush
Cyco Supa Sticky
Cyco has a 2 year guarantee but this is 6 years we are talking. They were kept in my garage where it gets hot and it’s get cold they weren’t stored in regulated environment.

Exoticsonly25 said:

I have a box of a bunch of nutrients from when I used to grow back in 2016-2017 and most of the bottles are opened and more than likely junk. But these three all are sealed still never been opened, you guys think they are any good?

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Consider the time, seeds, and effort you put into a grow. Outdated nutes would be my last choice for a grow.

NotTheRobot said:

Consider the time, seeds, and effort you put into a grow. Outdated nutes would be my last choice for a grow.

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Trust me, that’s why they are still sitting there, I threw everything else away I just didn’t know since they are factory sealed still if they are any good. I know the gh 3 part stuff is good indefinitely so didn’t know if the same would apply here

Exoticsonly25 said:

Trust me, that’s why they are still sitting there, I threw everything else away I just didn’t know since they are factory sealed still if they are any good. I know the gh 3 part stuff is good indefinitely so didn’t know if the same would apply here

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Especially something that has Sticky in the name. It's likely chunky and watery, not sticky any more.

how have they been stored? if in the dark and under cool yo cold temps, there should be no problem useing them. the unopened ones that is, theres a use bt date for a reason, it means they have been opened and used within the sell by date and still work.
but it all depends on the conditions they have been kept in

I wouldn't use them personally, they've been sitting too long in an uncontrolled environment.
If you still want to use the "Cyco" brand, head over to growgreenmi.com and snag all you can on thier product close out and save some money, the "Zyme" that you paid $46 for a little bottle is $69 for a 5 liter bottle, looks like some things are out of stock, but savings are to be had.

Appreciate it, I’m going to just toss the stuff as well

TBH they weren’t good 6 years ago. They are additives and not necessarily nutrients. Stick with basic nutrients and you’ll have healthy happy plants.