Problems can arise when the objects are too massive. While the dirt is moving, there is no problem but when stopped the stuff loses its momentum and just sits or barely moves when you vacuum again. Nails, large hairpins, pencils and other things that are long, can be picked up and most of the time make it to the power unit but sometimes can get caught on the way. Pick these things up before vacuuming. Sawdust will clog it up because it is too massive and damp.
Systems designed for sawdust are much more powerful with large piping.
If somehow you get a clog there are a number of options. This is a self service site. We strived to make the purchasing as easy as possible. Unless you have a very large home or a small home like a moble home our kits will work for you. We can not return calls.