Are head cleaners safe?

I have a DVD writer that has been acting up a bit, and I’d like to try cleaning it if I can do so safely (I don’t want to make things worse obviously). Are there any good, safe optical head cleaners out there that don’t require disassembly of the drive? It’s a Sony DRU-500AX in case it matters.

I wouldn’t really recommend a head cleaner,since there is not same type of contact with a cd burner,as there is with a tape deck. If you suspect dirt,try some canned air to blow it out,and don’t spray it directly on the laser…Good Luck