Toilet seat device and toilet device

A toilet device, comprising:

• a flush toilet including a bowl and a rim, the bowl receiving excrement, an upper edge part being formed of the rim;
• a toilet seat where a user is seated, the toilet seat being mounted on the flush toilet;
• a sterilizer generating sterilizing water;
• a sprayer disposed lower than the toilet seat in a state in which the toilet seat is mounted on the flush toilet, the sprayer spraying a mist of the sterilizing water into the flush toilet;
• a blower generating a rising air stream by blowing air into the flush toilet;
• and
• a controller controlling the sterilizer, the sprayer, and the blower,
• the controller controlling the sprayer to simultaneously generate a first mist of the sterilizing water and a second mist of the sterilizing water in a state in which the controller causes the blower to generate a first rising air stream inside the flush toilet, the first mist having a particle size liftable toward the toilet seat by the first rising air stream, the second mist being generated to have a particle size larger than the particle size of the first mist and not to be lifted toward the toilet seat by the first rising air stream, the sprayer causing a total amount of the first mist to be less than a total amount of the second mist.