I'll try the sprayer again. I am afraid though that this cat is hardcore. Nothing seems to stop him. That why the plants were, in theory, safely tucked away from him.
Nothing we have tried keeps him from eating any and all plants. Only my cacti have proven too much for him. In the past, we even tried a special spray to make the leaves foul tasting. He just chewed them, then threw them up all over. He is a force of destruction. And he eats more than just plants. He chews up carpet, woodwork, anything he feels like at the time. And if he cannot eat it, he is likely to try to urinate on it. Drives me crazy.