diff --git a/package.json b/package.json
index 9b95109..a799733 100644
--- a/package.json
+++ b/package.json
@@ -45,8 +45,9 @@
     "bluebird": "^3.4.7",
     "chalk": "^1.1.3",
     "chokidar": "^1.6.1",
-    "fs-extra": "^1.0.0",
+    "fs-extra": "^2.1.2",
     "glob-all": "^3.1.0",
+    "graceful-fs": "^4.1.11",
     "yargs": "^6.3.0"
   },
   "devDependencies": {
diff --git a/src/bin/sync-glob.js b/src/bin/sync-glob.js
index 8e115bb..1b966bc 100644
--- a/src/bin/sync-glob.js
+++ b/src/bin/sync-glob.js
@@ -31,6 +31,10 @@ const argv = yargs.usage('Usage: $0 <sources> <target>')
   .alias('v', 'verbose')
   .default('verbose', false)
   .describe('verbose', 'Moar output')
+  .boolean('debug')
+  .alias('b', 'debug')
+  .default('debug', false)
+  .describe('debug', 'Log essential information for debugging')
   .version()
   .help('help')
   .showHelpOnFail(false, 'Specify --help for available options')
@@ -67,6 +71,7 @@ const close = syncGlob(sources, target, {
   watch: argv.watch,
   delete: argv.delete,
   depth: argv.depth || Infinity,
+  debug: argv.debug,
   transform: argv.transform,
 }, (event, data) => {
   const priority = notifyPriority[event] || 'low'
diff --git a/src/index.js b/src/index.js
index 3013ed0..a006116 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,7 +1,12 @@
 /* globals process */
 
 import fs from 'fs'
+import gracefulFs from 'graceful-fs'
+
+gracefulFs.gracefulify(fs)
+/* eslint-disable import/first */
 import path from 'path'
+import util from 'util'
 import globAll from 'glob-all'
 import chokidar from 'chokidar'
 import Promise, { promisify } from 'bluebird'
@@ -18,6 +23,7 @@ const defaults = {
   watch: false,
   delete: true,
   depth: Infinity,
+  debug: false,
 }
 
 /**
@@ -29,6 +35,7 @@ const defaults = {
  * @param {bool} [options.watch=false] - Enable or disable watch mode.
  * @param {bool} [options.delete=true] - Whether to delete the `target`'s content initially.
  * @param {bool} [options.depth=Infinity] - Chokidars `depth` (If set, limits how many levels of subdirectories will be traversed).
+ * @param {bool} [options.debug=false] - Log essential information for debugging.
  * @param {string} [options.transform=false] - A module path resolved by node's `require`.
  * @param {NotifyCallback} [notify] - An optional notification callback.
  * @returns {CloseFunc} - Returns a close function which cancels active promises and watch mode.
@@ -41,6 +48,9 @@ const syncGlob = (sources, target, options = {}, notify = () => {}) => {
   }
   // eslint-disable-next-line no-param-reassign
   sources = sources.map(trimQuotes)
+  const originalTarget = target
+  // eslint-disable-next-line no-param-reassign
+  target = path.normalize(target)
 
   if (typeof options === 'function') {
     // eslint-disable-next-line no-param-reassign
@@ -58,7 +68,7 @@ const syncGlob = (sources, target, options = {}, notify = () => {}) => {
   const notifyError = (err) => { notify('error', err) }
   const bases = sourcesBases(sources)
   const resolveTargetFromBases = resolveTarget(bases)
-  const { depth, watch } = options
+  const { depth, watch, debug } = options
   let { transform } = options
 
   if (typeof depth !== 'number' || isNaN(depth)) {
@@ -86,10 +96,19 @@ const syncGlob = (sources, target, options = {}, notify = () => {}) => {
   }
 
   // Initial mirror
+  const initSources = sources.map(source => (isGlob(source) === -1
+  && fs.statSync(path.normalize(source)).isDirectory() ? `${source}${source.slice(-1) === '/' ? '' : '/'}**` : source))
   const mirrorInit = [
-    promisify(globAll)(sources.map(source => (isGlob(source) === -1
-      && fs.statSync(source).isDirectory() ? `${source}/**` : source)))
-      .then(files => files.map(file => path.normalize(file))),
+    promisify(globAll)(initSources)
+      .then(files => files.map(file => path.normalize(file)))
+      .then((files) => {
+        if (debug) {
+          console.log(`sources: ${sources} -> ${initSources}`)
+          console.log(`target: ${originalTarget} -> ${target}`)
+          console.log(`globed files: \n\t${files.join('\n\t')}`)
+        }
+        return files
+      }),
   ]
 
   if (options.delete) {
@@ -160,17 +179,24 @@ const syncGlob = (sources, target, options = {}, notify = () => {}) => {
   // Watcher to keep in sync from that
   if (watch) {
     watcher = chokidar.watch(sources, {
+      cwd: process.cwd(),
       persistent: true,
       depth,
       ignoreInitial: true,
       awaitWriteFinish: true,
+      usePolling: true,
+      useFsEvents: true,
     })
 
     watcher.on('ready', notify.bind(undefined, 'watch', sources))
-      .on('all', (event, source) => {
+      .on('all', (event, source, stats) => {
         const resolvedTarget = resolveTargetFromBases(source, target)
         let promise
 
+        if (debug) {
+          console.log(`ALL: ${event} -> ${source} ${stats ? `\t\n${util.inspect(stats)}` : ''}`)
+        }
+
         switch (event) {
           case 'add':
           case 'change':
@@ -218,6 +244,12 @@ const syncGlob = (sources, target, options = {}, notify = () => {}) => {
       })
       .on('error', notifyError)
 
+    if (debug) {
+      watcher.on('raw', (event, rpath, details) => {
+        console.log(`RAW: ${event} -> ${rpath} \t\n${util.inspect(details)}`)
+      })
+    }
+
     process.on('SIGINT', close)
     process.on('SIGQUIT', close)
     process.on('SIGTERM', close)
diff --git a/test/copy.spec.js b/test/copy.spec.js
index 74fcc09..38097ff 100644
--- a/test/copy.spec.js
+++ b/test/copy.spec.js
@@ -1,5 +1,5 @@
 import syncGlob from '../src/index'
-import { beforeEachSpec, afterAllSpecs, awaitCount, awaitMatch, compare, compareDir, noop } from './helpers'
+import { beforeEachSpec, afterAllSpecs, fs, awaitCount, awaitMatch, compare, compareDir, noop } from './helpers'
 
 describe('node-sync-glob copy', () => {
   beforeEach(beforeEachSpec)
@@ -111,4 +111,24 @@ describe('node-sync-glob copy', () => {
       'mirror', compareDir(done, 'tmp/mock', 'tmp/copy')
     ))
   })
+
+  it('should copy empty sub directories', (done) => {
+    fs.ensureDirSync('tmp/mock/bar/empty')
+
+    const close = syncGlob('tmp/mock/**/*', 'tmp/copy', awaitMatch(
+      'error', (err) => {
+        fail(err)
+        close()
+        done()
+      },
+      'mirror', () => {
+        expect(fs.existsSync('tmp/copy/bar/empty')).toBe(true)
+
+        compareDir(null, 'tmp/mock', 'tmp/copy')
+
+        close()
+        done()
+      }
+    ))
+  })
 })
diff --git a/test/helpers.js b/test/helpers.js
index 233f94b..5b79474 100644
--- a/test/helpers.js
+++ b/test/helpers.js
@@ -10,6 +10,7 @@ export const fs = {
   appendFileSync: (source, ...args) => fsExtra.appendFileSync(path.normalize(source), ...args),
   existsSync: source => fsExtra.existsSync(path.normalize(source)),
   readFileSync: source => fsExtra.readFileSync(path.normalize(source)),
+  ensureDirSync: source => fsExtra.ensureDirSync(path.normalize(source)),
 }
 
 export const beforeEachSpec = () => {
@@ -106,6 +107,28 @@ export const awaitMatch = (...args) => {
   }
 }
 
+const logDirDiffSet = (source, target, res) => {
+  if (!res.same) {
+    const logs = res.diffSet.map((entry) => {
+      const state = {
+        equal: '==',
+        left: '->',
+        right: '<-',
+        distinct: '<>',
+      }[entry.state]
+      const name1 = entry.name1 ? entry.name1 : ''
+      const name2 = entry.name2 ? entry.name2 : ''
+      const path1 = entry.path1 ? entry.path1 : ''
+      const path2 = entry.path2 ? entry.path2 : ''
+      const { type1, type2 } = entry
+
+      return `${path1}/${name1} ${type1} ${state} ${path2}/${name2} ${type2}`
+    })
+
+    console.log(`${source} -> ${target}\n\t${logs.join('\n\t')}`)
+  }
+}
+
 export const compare = (done, source, target, options) => (event, data) => {
   if (event) {
     if (Array.isArray(data) && data.length === 2
@@ -120,6 +143,8 @@ export const compare = (done, source, target, options) => (event, data) => {
       compareContent: true,
     })
 
+    logDirDiffSet(source, target, res)
+
     expect(res.differences).toBe(0)
     expect(res.differencesFiles).toBe(0)
     expect(res.distinctFiles).toBe(0)
@@ -140,6 +165,8 @@ export const compareDir = (done, source, target, options = {}) => (event) => {
       compareContent: true,
     })
 
+    logDirDiffSet(source, target, res)
+
     expect(res.differences).toBe(0)
     expect(res.differencesFiles).toBe(0)
     expect(res.distinctFiles).toBe(0)
diff --git a/test/mock/emptyFile b/test/mock/emptyFile
new file mode 100644
index 0000000..e69de29
diff --git a/test/sync.spec.js b/test/sync.spec.js
index f056f4f..ec79354 100644
--- a/test/sync.spec.js
+++ b/test/sync.spec.js
@@ -51,7 +51,7 @@ describe('node-sync-glob watch', () => {
   })
 
   it('should sync a directory', (done) => {
-    const close = syncGlob('tmp/mock/foo', 'tmp/sync/', { watch }, awaitMatch(
+    const close = syncGlob('tmp/mock/foo', 'tmp/sync', { watch }, awaitMatch(
       'error', (err) => {
         fail(err)
         close()
@@ -93,4 +93,54 @@ describe('node-sync-glob watch', () => {
       }
     ))
   })
+
+  it('should sync empty sub directory deletion', (done) => {
+    try {
+      console.log(`EXISTS: tmp/mock/bar -> ${fs.existsSync('tmp/mock/bar')}`)
+      fs.ensureDirSync('tmp/mock/bar/empty')
+
+      const close = syncGlob('tmp/mock/**/*', 'tmp/sync', { watch, debug: true }, awaitMatch(
+        'error', (err) => {
+          fail(err)
+          close()
+          done()
+        },
+        ['mirror', 'watch'], compareDir(() => {
+          fs.removeSync('tmp/mock/bar/empty')
+        }, 'tmp/mock', 'tmp/sync'),
+        'remove', () => {
+          expect(fs.existsSync('tmp/sync/foo/b.txt')).toBe(true)
+          expect(fs.existsSync('tmp/sync/bar/empty')).toBe(false)
+
+          close()
+          done()
+        }
+      ))
+    } catch (err) {
+      console.log(err)
+
+      fail(err)
+      done()
+    }
+  })
+
+  it('should sync empty file deletion', (done) => {
+    const close = syncGlob('tmp/mock/**/*', 'tmp/sync', { watch, debug: true }, awaitMatch(
+      'error', (err) => {
+        fail(err)
+        close()
+        done()
+      },
+      ['mirror', 'watch'], compareDir(() => {
+        fs.removeSync('tmp/mock/emptyFile')
+      }, 'tmp/mock', 'tmp/sync'),
+      'remove', () => {
+        expect(fs.existsSync('tmp/sync/foo/b.txt')).toBe(true)
+        expect(fs.existsSync('tmp/sync/emptyFile')).toBe(false)
+
+        close()
+        done()
+      }
+    ))
+  })
 })