Sometimes the toner will cake a bit - particularly in humid environments. So you may need to shake the toner cart to loosen up the toner just like you do when installing a replacement. Just be sure to cover all openings in your cart or you'll have toner all over everything. But I'd still get an inkjet if you don't print a lot. The Canon iP4300 is hard to beat now that there are clone ink tanks for it. If you at least run a test print a few times a week, you shouldn't have much of a problem with clogging.
.bh.