I spot clean as needed and full clean once a month.
To me a full clean means spotless and completely disinfected this is time consuming it is unlikely that it can be done quickly, at the fastest 15 min and likely longer (my rack takes me 4 hours to completely clean and disinfect.)
It appears that many have not read or follow the instructions on the disinfectant they choose, all I know of require the surfaces to be throughly washed scrubbed and rinsed before use of disinfectant then the surfaces must be saturated and kept saturated for the correct contact time.
http://www.f10biocare.co.uk/vetguidelines2.pdf
http://www.vetdepot.com/product-labels/nolvasan-s.pdf
Take the time to read and then follow the instructions. The only way to know if a disinfectant is to either follow the instructions or do cultures to insure you are making a significant reduction.