I just switched to the flea pills because for some unknown reason my dog had an allergic reaction to the liquid. She just turned 18, been using the liquid you put between their shoulder blades for most of her life, so don't know what that was all about. But anyway, she's been known to take a pill, then spit it out 10 yards in the other direction. And no way is she fooled by lumpy cheese. So now I just do what you do, wait til she eats, flick the thing down her throat, hold her snout and rub her neck til I'm sure it's long gone. They can be such stinkers.