I feel it works great for being a liquid, I tried to take a slightly larger amount once and found out I couldn't handle it, it made me light headed and I had to lay down right away, so I never tried that again. I feel the liquid hits all over your body a lot faster than the pills, gets into the blood stream faster, so if you are feeling movement or some of those strange feelings the liquid would work well.
The reason I like the pills is I can up the amount of pills I take anytime I want and can handle it, it takes the pills longer to get into the blood stream but I also feel they stay there longer because the pills are slowly disolving in your stomach.
So I like to use both for different reasons.
I have bought a tincture with all three in it--blackwalnut, Wormwood and clove a 2oz. bottle at a local health food store and it was nowhere near as effective as the dewormer, felt like I wasted my money on that bottle. So if you are interested in a liquid I would try the dewormer.
Since you will be cleansing for more than a month or two it would be worth a try to use both(not at the same time) and see how they compare for you.