Rats not using enrichment??

Hii
My boys are nearly 6 months old but recently I’ve noticed them not using their enrichment toys ??
I even moved them to give them a change and added a new one but still not using it lol.
Is this them just getting lazy and only wanting food that has been scattered??
I have them on a mix of two rat mixes and I know they aren’t too keen on 1 of the mixes but I didn’t want to waste but they’re ignoring food in their enrichment toys that I know they like .
So just curious if it’s just them being your typical lazy male rat 🙈

Thank you ^^