::)The largemouth uses it's sense of smell lastly when choosing forage to eat....because it mostly relies on it's lateral line and sense of site....Most attractants when used may cause the largemouth to hold onto a bait longer giving the angler more time to feel the take....My suggestion is to watch some of the Glenn Lau movies on how largemouths eat....Using the commercially sold attractants is always better than using an oil base product which pollutes the water....