A little while after I started giving my cat the petroleum-based hairball remedies, two things happened - he started refusing them (even the ones with a crunchy treat on the outside and petroleum on the inside), and he started getting mucus plugs blocking his urethra. I think maybe the petroleum was irritating to his urinary tract

So I got some ordinary (human) fiber therapy capsules (psyllium seed husk), and I snip one capsule open, sprinkle it over his canned food, and mash it in along with his vitamins and other things (3V Caps, Cosequin, Kitty Kaviar bonito flakes because he likes the flavor, and extra water because he likes gravy!)

He also eats a fair amount of kibble, so I got some Veterinarian's Best brand Cat Lube tablets (which are mostly psyllium with some enzymes mixed in), and crumble one over his kibble in roughly kibble-sized pieces. That's chicken-flavored, and he likes it. No more hairballs, no more constipation, and no more urinary mucus plugs!

Love, Columbine