Amazon Basics 200-Sheet Auto Feed Cross-Cut Paper Shredder, High Security P-4, Anti-Jam, 8.5 Gallon Pullout Bin, Black

Not bifl but something like https://a.co/d/0bk1OjiW It's cheaper than hiring a truck to do it for you and you know that everything will get shredded properly. Just read the instructions to see if it needs oil and if it does oil of the machine every time you take out a full basket of paper. Machines like this can work for about 20 minutes straight and then need a half hour to an hour break to cool off. If you're putting in 200 Pages at a time, you'll easily be able to do it without much effort. If you put a stack of paper in in the morning before you leave for work and another when you come home you'll be done in 10 days.