chew sticks

I recently bought apple chew woodsticks online and I read somewhere that I should put in the freezer for about a day or two just to make sure there are no insects that might cause harm to my girl. What are your thoughts about chew woodsticks for baby guinea pigs?

Hi all! So recently I bought what I thought were normal chew sticks on amazon. Turns out they are cat’s Matatabi sticks/Silvervine sticks. On the listing, it says they they are suitable for all rodents as well but I’m not sure as I can’t find any information on the web in regards to guinea pigs...