I hate baby latches. Either they don’t work, as in the baby can still open them ;), or they are so hard to get open that I contemplate unscrewing the handles to get into the cabinet or give up the contents as lost. Anyway, what works for me to babyproof cabinets on my double cabinets are simple baby links, normally meant as toys:
Just connect two of them to each handle (left photo – you might need an extra one between, depending on your handles) and you can detach them for easy access (right photo). It still keeps the little explorer out (altho I do have to occasionally tighten the screws on the handles from him yanking on them), even as he destroys the rest of my house on a regular basis!