Using the shake only without the light test will gift you many, many Neon Kitties and Midnight Pups.
Shake all the balls at the store to find the completely silent ones, then use the light test to eliminate coloured balls? weigh your balls although remember due to the kitty litter secret surprise kinetic sand the weights are random but you will have a higher chance of picking Crystal Bunny by grabbing the lightest one.
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