This entity is
not in the
FGD by default.
It should not be put directly in a map because it can only be configured through code.
spraycan is a point entity available in all 
Source games except 
Counter-Strike: Global Offensive. This is the entity that applies player-chosen spray on walls when they use their spray bind (impulse 201).
ConVars
| Cvar/Command | Parameters or default value | Descriptor | Effect |
|---|
decalfrequency | 10 | seconds | How much must a player wait in seconds before they are able to spray another time |
r_spray_lifetime | 10 | | Number of rounds player sprays are visible  Note:In  sprays disappear after r_spray_lifetime / 2 rounds |
cl_logofile | | | Spraypoint logo decal. |
cl_playerspraydisable | 0 | | Disable visibility of player sprays. |
See also
Class hierarchy
