Looking for suggestions on places to buy natural perches or if I should go and get my own?

Hi all! New to this reddit. My 2 cockatiels recently got their prior perches to a state of disarray (poop, chewing, etc.) and I've decided it's time for new perches.

Previously, they had perches from someone's backyard (I live in Australia, so the trees were appropriate) but when they were gifted to me, I was not told if/how they were disinfected or anything. I've researched what I would need to do in order to do the same but I am completely fearful about not disinfecting the perches thoroughly enough and causing some form of harm to my birds.

However, in my online search portion, I've not found anything that I feel really suits the size I'm looking for. I have found natural perches in places like Amazon (unsure if I should trust), local pet stores and parrot-based sites but I cannot find any in the sizes I'm looking for. I'd need at least 2 of them in 82CM so I can get some wide across the cage as that's where my birds reside most currently but all of the online ones only seem to be fairly short, only 20-40 CM.

So... any suggestions or advice is appreciated. Even if it's just telling me to stop being a worry-wart and to go and collect/disinfect my own haha.