Icthammol seems to work pretty well on metabolic horses, that I've seen. Sometimes it's just more important to change the diet if that's the case. I don't have any scientific proof that sugardyne would breed more thrush, but since it's more prevalant in metabolic horses, I'd just forgo adding sugar and go for something like Icthammol or epsom salts. ACV will also help draw out abscesses, but sometimes I think they just happen to open when they are ready, regardless of what you put on the feet. Warm water probably does more than the other ingredients, as it stimulates circulation in the whole foot, the other ingredients may just help prevent the water from breeding more thrush or in cleansing the opening when it finally pops. But it helps you feel better when you "do something" doesn't it? LOL And warm water does seem to help the horse feel more comfortable for a while, so go for it. As for creams and packing...may not really "draw out" the abscesses, but are great when it opens and may help cushion the foot to make them more comfortable in the mean time. Just be sure to change it out and let the foot air out some, they get too soft if kept constantly wet and are more prone to bruising.