diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index a4d7f5430..1bf572604 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -60,7 +60,6 @@ Lint/Void:
 # Cop supports --auto-correct.
 Performance/StringReplacement:
   Exclude:
-    - 'app/models/harvest.rb'
     - 'app/models/planting.rb'
     - 'app/models/seed.rb'
     - 'spec/rails_helper.rb'
@@ -85,7 +84,6 @@ Rails/Date:
 Rails/HasAndBelongsToMany:
   Exclude:
     - 'app/models/crop.rb'
-    - 'app/models/harvest.rb'
     - 'app/models/member.rb'
     - 'app/models/photo.rb'
     - 'app/models/planting.rb'
@@ -291,7 +289,6 @@ Style/IdenticalConditionalBranches:
 # Offense count: 1
 Style/IfInsideElse:
   Exclude:
-    - 'app/models/harvest.rb'
 
 # Offense count: 26
 # Cop supports --auto-correct.
@@ -302,7 +299,6 @@ Style/IfUnlessModifier:
     - 'app/controllers/shop_controller.rb'
     - 'app/helpers/crops_helper.rb'
     - 'app/models/crop.rb'
-    - 'app/models/harvest.rb'
     - 'app/models/member.rb'
     - 'app/models/order.rb'
     - 'app/models/planting.rb'
@@ -352,7 +348,6 @@ Style/MultilineBlockLayout:
 # SupportedStyles: symmetrical, new_line, same_line
 Style/MultilineHashBraceLayout:
   Exclude:
-    - 'app/models/harvest.rb'
     - 'app/models/planting.rb'
     - 'app/models/product.rb'
     - 'app/models/seed.rb'
@@ -432,7 +427,6 @@ Style/MultilineTernaryOperator:
 Style/MutableConstant:
   Exclude:
     - 'app/controllers/members_controller.rb'
-    - 'app/models/harvest.rb'
     - 'app/models/planting.rb'
     - 'app/models/seed.rb'
 
@@ -471,7 +465,6 @@ Style/NilComparison:
 # Configuration parameters: IncludeSemanticChanges.
 Style/NonNilCheck:
   Exclude:
-    - 'app/models/harvest.rb'
 
 # Offense count: 2
 # Cop supports --auto-correct.
@@ -497,7 +490,6 @@ Style/NumericPredicate:
     - 'app/helpers/harvests_helper.rb'
     - 'app/helpers/plantings_helper.rb'
     - 'app/models/crop.rb'
-    - 'app/models/harvest.rb'
     - 'app/models/photo.rb'
     - 'lib/tasks/growstuff.rake'
     - 'script/check_contributors_md'
@@ -565,7 +557,6 @@ Style/RedundantSelf:
     - 'app/models/comment.rb'
     - 'app/models/crop.rb'
     - 'app/models/follow.rb'
-    - 'app/models/harvest.rb'
     - 'app/models/member.rb'
     - 'app/models/notification.rb'
     - 'app/models/order.rb'
@@ -619,7 +610,6 @@ Style/SymbolProc:
   Exclude:
     - 'app/controllers/crops_controller.rb'
     - 'app/models/crop.rb'
-    - 'app/models/harvest.rb'
     - 'app/models/planting.rb'
     - 'app/models/post.rb'
     - 'lib/tasks/growstuff.rake'
@@ -664,7 +654,6 @@ Style/UnlessElse:
 Style/UnneededInterpolation:
   Exclude:
     - 'app/models/crop.rb'
-    - 'app/models/harvest.rb'
     - 'spec/features/crops/crop_wranglers_spec.rb'
     - 'spec/features/following_spec.rb'
     - 'spec/features/shared_examples/append_date.rb'
diff --git a/app/models/harvest.rb b/app/models/harvest.rb
index bb67ccbde..1cd5fa563 100644
--- a/app/models/harvest.rb
+++ b/app/models/harvest.rb
@@ -20,7 +20,8 @@ class Harvest < ActiveRecord::Base
   validates :quantity,
     numericality: {
       only_integer: false,
-      greater_than_or_equal_to: 0 },
+      greater_than_or_equal_to: 0
+    },
     allow_nil: true
 
   UNITS_VALUES = {
@@ -34,7 +35,7 @@ class Harvest < ActiveRecord::Base
     "buckets" => "bucket",
     "baskets" => "basket",
     "bushels" => "bushel"
-  }
+  }.freeze
   validates :unit, inclusion: { in: UNITS_VALUES.values,
                                 message: "%{value} is not a valid unit" },
                    allow_nil: true,
@@ -48,7 +49,7 @@ class Harvest < ActiveRecord::Base
     "kg" => "kg",
     "lb" => "lb",
     "oz" => "oz"
-  }
+  }.freeze
   validates :weight_unit, inclusion: { in: WEIGHT_UNITS_VALUES.values,
                                        message: "%{value} is not a valid unit" },
                           allow_nil: true,
@@ -61,20 +62,20 @@ class Harvest < ActiveRecord::Base
   # we're storing the harvest weight in kilograms in the db too
   # to make data manipulation easier
   def set_si_weight
-    return if self.weight_unit.nil?
-    weight_string = "#{self.weight_quantity} #{self.weight_unit}"
+    return if weight_unit.nil?
+    weight_string = "#{weight_quantity} #{weight_unit}"
     self.si_weight = Unit.new(weight_string).convert_to("kg").to_s("%0.3f").delete(" kg").to_f
   end
 
   def cleanup_quantities
-    self.quantity = nil if quantity == 0
+    self.quantity = nil if quantity.zero?
     self.unit = nil if quantity.blank?
-    self.weight_quantity = nil if weight_quantity == 0
+    self.weight_quantity = nil if weight_quantity.zero?
     self.weight_unit = nil if weight_quantity.blank?
   end
 
   def harvest_slug
-    "#{owner.login_name}-#{crop}".downcase.gsub(' ', '-')
+    "#{owner.login_name}-#{crop}".downcase.tr(' ', '-')
   end
 
   # stringify as "beet in Skud's backyard" or similar
@@ -82,28 +83,28 @@ class Harvest < ActiveRecord::Base
     # 50 individual apples, weighing 3lb
     # 2 buckets of apricots, weighing 10kg
     string = ''
-    if self.quantity
-      string += "#{number_to_human(self.quantity.to_s, strip_insignificant_zeros: true)} "
-      string += if self.unit == 'individual'
+    if quantity
+      string += "#{number_to_human(quantity.to_s, strip_insignificant_zeros: true)} "
+      string += if unit == 'individual'
                   'individual '
-                elsif self.quantity == 1
-                  "#{self.unit} of "
+                elsif quantity == 1
+                  "#{unit} of "
                 else
-                  "#{self.unit.pluralize} of "
+                  "#{unit.pluralize} of "
                 end
     end
 
-    string += if self.unit != 'individual' # buckets of apricot*s*
-                "#{self.crop.name.pluralize}"
-              elsif self.quantity == 1
-                "#{self.crop.name}"
+    string += if unit != 'individual' # buckets of apricot*s*
+                crop.name.pluralize.to_s
+              elsif quantity == 1
+                crop.name.to_s
               else
-                "#{self.crop.name.pluralize}"
+                crop.name.pluralize.to_s
               end
 
-    if self.weight_quantity
-      string += " weighing #{number_to_human(self.weight_quantity, strip_insignificant_zeros: true)}"\
-        " #{self.weight_unit}"
+    if weight_quantity
+      string += " weighing #{number_to_human(weight_quantity, strip_insignificant_zeros: true)}"\
+        " #{weight_unit}"
     end
 
     string