How to cut up an old aluminium ladder for disposal

I have an old ladder at home that I need to dispose off. Unfortunately, I cannot use my angle grinder to cut it up to smaller pieces because of the danger of inhaling aluminium dust. Also, aluminium filings are highly flammable and it is not recommended that one does so. So what do we use? We use a tool that this gentleman is using…a saber tooth saw. It is either that or I pay someone to dispose of it for me. Need to weigh the options of this and see what is the better way. A saber tooth will be a good tool but how often will I use it…that is the question!