Im subjected to random dot test at work , ive been using the urinator/minute man synth urine which worked flawlessly about a year.(had 2 randoms in 6mos) ....I read somewhere soon dot test are going to be observed soon..wtf?....i hope i read wrong....After my boss called told me i had to go , i filled er up, plugged in the two 9v, it stayed perfect 98 deg for hours...even though it was so simple to sub , there would be no way to uncap and hold the cup with some dude watchin..quitting would suck