The static and dynamic sprinklers, in order to work correctly, have a small filter supplied that reduces the obstructions derived from the suspended materials.
Its simplicity is that normally it is enough to disassemble it, from above for some models and from below for others, clean it and reinsert it inside but this work must be done on all sprinklers.
Despite being present, they have limits and therefore it is strongly recommended to add a main one, sizing it correctly, to avoid having to clean each individual sprinkler often.
For Dynamic sprinklers, on the other hand, the filter is not necessarily mounted. If present it is located in the lower part and to reach it separate the internal body from the external one.
The filter is installed before the solenoid valve manifold but after the pump or water source. Never put the filter before the pump because you are going to change the performance of the pump.
The filters can be disc or mesh but I recommend that there is a drain valve to clean it without disassembling it.
A clean filter keeps the water source clean and reduces routine maintenance.