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Why is dry ice no longer widely used as a cloud-seeding agent?

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What Is Cloud Seeding? — weather modification Cloud seeding can produce an extra 5 to 15% of precipitation.

Dry ice is no longer widely used as a cloud-seeding agent primarily due to logistical and functional limitations.

Unlike silver iodide, which can be dispersed from the ground via generators or through various aerial delivery methods, dry ice must be delivered directly into the supercooled regions of a cloud to be effective. Furthermore, once a pellet of dry ice evaporates, it loses its ability to influence the cloud, whereas other agents provide more persistent or flexible delivery options.12

Because of these constraints, supercooled clouds are now most commonly seeded with tiny particles of silver iodide, which offer greater versatility in application, including the use of ground-based generators, aircraft, and pyrotechnic devices like rockets.12