Obsession

My cat has recently developed an obsession with my potted plants.

For the past 2 months. We have been trying in vain to stop him from digging up our lime tree, chilli plants and succulents. AND eating the chives.

We tried everything. Cut limes, sprays, citrus jelly, metal racks. Nothing seems to work!

I come home everyday to find my poor plants uprooted and laying helplessly around the balcony. My chives have never grown taller than 1cm!

We already lost 2 chilli plants. And if I have to sweep the balcony one more time! Grr

Does anyone have any handy tips I could use???? Help!!!