Cryptic crossword No 3,802

Across

1. Provides stimulation from drug stashed in secret containers (10)
2. Woodcutter, definitely Russian, recoiling in confusion (4)
3. Unsettled a withdrawn young woman with fixed routine (9)
4. Out cycling, goes to deliver rugs (7)
5. "Keep away from danger", radical surf adage (9)
6. I didn't catch you checking earth to find grain (5)
7. Festive date has Mum squeezing into tiny size (4)
8. Sang praises of former Hamlet lead periodically (7)
9. Starts to suspect perhaps Home and Away's derivative (4-3)
10. Nimble infiltrators, notorious Japanese agents at fringes? (5)
11. Malice consumes neglected singles? Nonsense (15)
12. Share note about what winds customers up: prices, maybe (10)
13. Interminable delay near islands, reportedly in Hawaiian region (7)

Down

1. Brave duke fighting tirelessly among others (6)
2. Blowing top in refusal to accept dismissal (8)
3. Character and composure giving proof of authenticity (10)
4. Potentially, Elon and Jeff infest Mars foolishly (5,5)
5. Symbol of rank covered up by certain GIs nightly (8)
6. Boozer flushing lavatory after unloading vomit (4)
7. Deity essentially sleazebag's delusion (4)
8. Prompts delivered for lines (6)
9. Displaying hostility, destabilise using a coup (10)
10. Star of Casablanca? Where? (6)
11. Zone surrounding sources of occasional lactation? (6)
12. Dispute about papers that may presage unpaid leave (6)
13. Abundance of 21a left to go to seed (6)
14. Following outspoken strikes, they finally like workers' output? (4)
15. Employee at supermarket pockets food (4)
16. Spring-clean out of boredom, possibly with grave expression? (4,2,4)