diff --git a/mods/butterflies/init.lua b/mods/butterflies/init.lua
index 16b67910..ad3c79fe 100644
--- a/mods/butterflies/init.lua
+++ b/mods/butterflies/init.lua
@@ -43,18 +43,8 @@ for i in ipairs (butter_list) do
 			fixed = {-0.1, -0.1, -0.1, 0.1, 0.1, 0.1},
 		},
 		floodable = true,
-		on_place = function(itemstack, placer, pointed_thing)
-			local player_name = placer and placer:get_player_name() or ""
-			local pos = pointed_thing.above
-
-			if not minetest.is_protected(pos, player_name) and
-					not minetest.is_protected(pointed_thing.under, player_name) and
-					minetest.get_node(pos).name == "air" then
-				minetest.set_node(pos, {name = "butterflies:butterfly_"..name})
-				minetest.get_node_timer(pos):start(1)
-				itemstack:take_item()
-			end
-			return itemstack
+		on_construct = function(pos)
+			minetest.get_node_timer(pos):start(1)
 		end,
 		on_timer = function(pos, elapsed)
 			if minetest.get_node_light(pos) < 11 then
@@ -76,18 +66,8 @@ for i in ipairs (butter_list) do
 		drop = "",
 		groups = {not_in_creative_inventory = 1},
 		floodable = true,
-		on_place = function(itemstack, placer, pointed_thing)
-			local player_name = placer and placer:get_player_name() or ""
-			local pos = pointed_thing.above
-
-			if not minetest.is_protected(pos, player_name) and
-					not minetest.is_protected(pointed_thing.under, player_name) and
-					minetest.get_node(pos).name == "air" then
-				minetest.set_node(pos, {name = "butterflies:hidden_butterfly_"..name})
-				minetest.get_node_timer(pos):start(1)
-				itemstack:take_item()
-			end
-			return itemstack
+		on_construct = function(pos)
+			minetest.get_node_timer(pos):start(1)
 		end,
 		on_timer = function(pos, elapsed)
 			if minetest.get_node_light(pos) >= 11 then
diff --git a/mods/fireflies/init.lua b/mods/fireflies/init.lua
index be8fac60..827ed983 100644
--- a/mods/fireflies/init.lua
+++ b/mods/fireflies/init.lua
@@ -33,18 +33,8 @@ minetest.register_node("fireflies:firefly", {
 	},
 	light_source = 6,
 	floodable = true,
-	on_place = function(itemstack, placer, pointed_thing)
-		local player_name = placer:get_player_name()
-		local pos = pointed_thing.above
-
-		if not minetest.is_protected(pos, player_name) and
-				not minetest.is_protected(pointed_thing.under, player_name) and
-				minetest.get_node(pos).name == "air" then
-			minetest.set_node(pos, {name = "fireflies:firefly"})
-			minetest.get_node_timer(pos):start(1)
-			itemstack:take_item()
-		end
-		return itemstack
+	on_construct = function(pos)
+		minetest.get_node_timer(pos):start(1)
 	end,
 	on_timer = function(pos, elapsed)
 		if minetest.get_node_light(pos) > 11 then
@@ -68,18 +58,8 @@ minetest.register_node("fireflies:hidden_firefly", {
 	drop = "",
 	groups = {not_in_creative_inventory = 1},
 	floodable = true,
-	on_place = function(itemstack, placer, pointed_thing)
-		local player_name = placer:get_player_name()
-		local pos = pointed_thing.above
-
-		if not minetest.is_protected(pos, player_name) and
-				not minetest.is_protected(pointed_thing.under, player_name) and
-				minetest.get_node(pos).name == "air" then
-			minetest.set_node(pos, {name = "fireflies:hidden_firefly"})
-			minetest.get_node_timer(pos):start(1)
-			itemstack:take_item()
-		end
-		return itemstack
+	on_construct = function(pos)
+		minetest.get_node_timer(pos):start(1)
 	end,
 	on_timer = function(pos, elapsed)
 		if minetest.get_node_light(pos) <= 11 then
@@ -95,27 +75,11 @@ minetest.register_tool("fireflies:bug_net", {
 	description = S("Bug Net"),
 	inventory_image = "fireflies_bugnet.png",
 	pointabilities = {nodes = {["group:catchable"] = true}},
-	on_use = function(itemstack, player, pointed_thing)
-		local player_name = player and player:get_player_name() or ""
-		if not pointed_thing or pointed_thing.type ~= "node" or
-				minetest.is_protected(pointed_thing.under, player_name) then
-			return
-		end
-		local node_name = minetest.get_node(pointed_thing.under).name
-		local inv = player:get_inventory()
-		if minetest.get_item_group(node_name, "catchable") == 1 then
-			minetest.remove_node(pointed_thing.under)
-			local stack = ItemStack(node_name.." 1")
-			local leftover = inv:add_item("main", stack)
-			if leftover:get_count() > 0 then
-				minetest.add_item(pointed_thing.under, node_name.." 1")
-			end
-		end
-		if not minetest.is_creative_enabled(player_name) then
-			itemstack:add_wear_by_uses(256)
-			return itemstack
-		end
-	end
+	tool_capabilities = {
+		groupcaps = {
+			catchable = { maxlevel = 1, uses = 256, times = { [1] = 0, [2] = 0, [3] = 0 } }
+		},
+	},
 })
 
 minetest.register_craft( {