If you detect the odor of antifreeze you didn't get it all. Keep digging until all contaminated soil is removed. Replace with new soil and reseed. Dogs and cats suffer and sometimes die after licking spilled or flushed antifreeze. If your pet is involved, get it to a veterinarian immediately and hope for the best.
Sanitation is a very important component in successful gardening.
Keep it clean and it'll tend to stay clean throughout the following year. Tomato vines and other plant parts free of diseases and insects can be buried or placed on the compost pile. Plant material infested with diseases like verticillium and fusarium should be removed from the property and destroyed since these diseases will carry over to next year in the compost and soil. Rake the garden clean, turn it over, and sow a cover crop to hold the soil during winter months and add valuable organic matter when turned under in the spring. Recent research suggests that plowing on a dark night decreases the germination of some weed seeds.