How do you get rid of ants from hibiscus flowers grown in pots in India?

dear friends

for my question i want to add

I have tried some chemicals that are available in local market in India Andhra pradesh but unfortunately i have lost 5 plants out of 30 plants that i grow and leter now a days that i am cleaning and removing all the eggs by using neet oil 4 dropsmixed with 1/2 lilter water and spraying. I found some use but that is effecting the flowers

can any one help me friends

govind