Industry 405nm M W G-L100 Blue/Violet Laser Dot Module 12V w/Driver + TTL 0-20KHz + Long Time Working

I run a laser spectroscopy lab and have dealt with laser of various kinds. I thought this might be an affordable option for a reasonably power 405 nm laser. Right off the bat the laser we received was never at 100 mW of power and over time (less than a month) it degraded to about 0.4 mW of power. I requested a replacement which they sent (it took over many months to get to me.) The new laser within hours was down to 10 mW and now (2 months later) is at 0.01 mW which is not useful.I'll also note that the laser's output mode is AWFUL (this kind of diode normally has non-Gaussian mode, but this is terrible) - the included collimating lens is unstable and not well mounted.I would try a different company.