moisture- help drying out

so I wasn't thinking over the weekend- I had my gray tank valve closed and my outdoor kitchen sink somehow backed up (which i was not using)-
Short story- the sink overflowed and the water went under cabinet and got some of the insulation (and prob) the wood wet- I have limited access to this area- I took off the panel so i can see the plumbing under the sink. Need recommendations on what i can put in that area to get rid of as much moisture as possible- I am sure I can buy stuff from Lowes that absorb moisture but looking for other suggestions since it is a hard area to access