I don’t know, but I am going to try one this year, why not? Similar things work very well for flowers like impatients.
I had a HUGE garden last year, and got hit with some personal stuff that killed my time in the garden, and it all went to crap. I was so bummed. The pumpkins and watermelon were fine, but anything that didn’t overtake everything else, like the tomaotes and basil, really suffered. I tilled everything under, and planted grass.