how do you "drench" lilies?

hi,
i need knowledge on how to use a product called merit 75wg. i've purchased it to use on the lily beetles emerging in my gardens.
merit 75wg is taken up into the lily root system. the beetles eat the leaf and die. the lilies bulb is normally planted 6" deep and will pull itself deeper as it matures larger. there are roots at the base of the bulb and also along the stem that emerges from the top of the bulb, to ground level. lilies are normally planted 1-2 feet apart.
merit recommends drenching when the lily starts to emerge from the ground, using 1 tsp per 10 gallons of water (minimum). a 2 oz. jar (powder) will cover 2,000 sq ft. of garden area. calculating this down, i had 12 tsp per 1 oz. 12 tsp x 10 gallons = 120 gallons for 1000 sq ft of lilies.
i had started the process, with a 2 gallon sprinkler can. i would use 1 gallon for every 1-2 sq feet of ground area around the lily.(ies). i have done about 50 of my lilies and used up about half of the product. thus............i figure i'm doing something wrong here. i have about 140 more to drench
i need help!!!!!!!!!!!! ^_^
i tried to look up the word "drench" here in our glossary and could not find it. i also tried to look up on the internet "how to drench?" etc.... no luck. so i'm hoping that someone here can help me.

1. what is drenching?
2. how do you drench?
3. about how many inches deep do you need to drench.
4. about how far from each lily stem or group, do you need to drench?

i'm looking forward to your knowledge. ^_^
sincerely,
debi z and my little gardening pekingese , franklin

debi
you have posted your question in the wrong place. This forum is intended to handle problems with adding data to BugFiles.

If you post your question to our Garden Pests and Diseases Discussion Forum: http://davesgarden.com/community/forums/f/pad/all/
someone may be able to help you,

Kennedy
BugFiles Administrator