You can use bleach at 1/10 dilution for a few minutes to disinfect the tank and equipment. I wouldn't use bleach on the plants at any dilution. Bleach strong enough to kill snail eggs on plants, will probably kill the plants. Strong PP might work but I've had snail eggs survive PP dips.
A much easier solution would be to just throw in about 6 assassin snails and let them take care of the problem. After about 3-4 months, the only snails you'll have left will be the assassin snails. But you can just take them out if you don't want them. They reproduce pretty slow.