I've never seen an Albendazole product for animals. Albendazole (for people) is candy. Fenbendazole, yes, I've seen it in pet stores, online pet supply ops, etc. I've taken/employed just about everything known or imaginable. And just about everything has a certain level of effect, IMO. It really depends on what you're trying to beat down. I reccommend any of the pour on products for those who are dealing with problems outside the GI tract. They are highly concentrated (relative to pharms for humans) and directly enter the bloodstream. Not to mention cheap as dirt.
I also now recommend the Beck protocol (thanks to N), electro (a frequency generator or a good small gizmo), ozone/oxygen therapy.
Ozone is on the top of the list for my purposes/needs. (Lungs, primarily)