First kill/control the ants; ants bring aphids!! Also ants in the root zone allow air to get to the roots and dry them.
Next, repot your Meyer; a 2 year old tree probably should be in at least a 12" pot, but the container gurus here can give you better advice. Post a photo and you will get more and better advice. In my field and garden Meyers, I am the Empire's Death Star for ants; no ants, no aphids, and no horribly curled/disfigured leaves.

I gave my lemon a nice warm bath wiped it down with a nice soft cloth heres a picture of the plant it dosen't grow up straight what do you do about that? Hoe you can see my picture ok

HOW to kill the ants on containerized citrus when baits don't work????

baking soda mixed with a little bit of sugar.

I have ants in my one tree. Shocked... nothing else is on thm. They are going for the flowers and the nectar. Feel at a loss, no idea what to do. They are super tiny ants

Use very porous mix and plant it in a bigger pot that can hold a stiff wire and tie the tree to that wire. Wires can be found during an election in the political vote for me hoop signs. Don't worry if the tree has a permanent s curve, it adds character.

Citrus_canuck try the baking soda and sugar. it is cheap as you already have it and it works guaranteed

Thanks susanne

I'll try it to as I have an ant problem too.susanne

I, too, had a problem with very tiny ants. Tried the baking soda and powdered sugar. It worked!! Thanks Susanne!!!!
Rene'

you're welcome :)

I'm starting to get an ant problem with my container citruses here and was wondering how to apply the baking soda and sugar mixture.
What ratio of Baking soda to sugar and do i just sprinkle it over the soil?

I don't know if this is the conventional way, but I put a 50/50 ratio down in a ring pattern inside of a saucer - close to the edge so that no powder would touch the bottom of the container. I removed the saucer before watering and made sure the container stopped "dripping" before putting it back onto the saucer.