diff --git a/src/multio/config/MultioConfiguration.cc b/src/multio/config/MultioConfiguration.cc
index 68c15be6e..fe60e9c67 100644
--- a/src/multio/config/MultioConfiguration.cc
+++ b/src/multio/config/MultioConfiguration.cc
@@ -4,7 +4,8 @@
 
 #include "multio/config/MetadataMappings.h"
 #include "multio/config/MultioConfiguration.h"
-
+#include "eckit/log/Log.h"
+#include "multio/LibMultio.h"
 #include "multio/util/Environment.h"
 #include "multio/util/Substitution.h"
 
@@ -61,14 +62,14 @@ ConfigAndPaths configureFromEnv(config::LocalPeerTag tag) {
 
     if (::getenv("MULTIO_PLANS")) {
         std::string cfg(::getenv("MULTIO_PLANS"));
-        std::cout << "MultIO initialising with plans " << cfg << std::endl;
+        LOG_DEBUG_LIB(LibMultio) << "MultIO initialising with plans " << cfg << std::endl;
         paths.configDir = "";
         return ConfigAndPaths{paths, eckit::LocalConfiguration{eckit::YAMLConfiguration(cfg)}};
     }
 
     if (::getenv("MULTIO_PLANS_FILE")) {
         eckit::PathName filePath(::getenv("MULTIO_PLANS_FILE"));
-        std::cout << "MultIO initialising with plans file " << filePath << std::endl;
+        LOG_DEBUG_LIB(LibMultio) << "MultIO initialising with plans file " << filePath << std::endl;
 
         auto paths2 = defaultConfigPaths(filePath);
         return ConfigAndPaths{paths2, eckit::LocalConfiguration{eckit::YAMLConfiguration{paths2.configDir}}};
@@ -77,14 +78,14 @@ ConfigAndPaths configureFromEnv(config::LocalPeerTag tag) {
     // IFS Legacy
     if (::getenv("MULTIO_CONFIG")) {
         std::string cfg(::getenv("MULTIO_CONFIG"));
-        std::cout << "MultIO initialising with config " << cfg << std::endl;
+        LOG_DEBUG_LIB(LibMultio) << "MultIO initialising with config " << cfg << std::endl;
         paths.configDir = "";
         return ConfigAndPaths{paths, configureFromSinks(eckit::LocalConfiguration{eckit::YAMLConfiguration(cfg)})};
     }
 
     if (::getenv("MULTIO_CONFIG_FILE")) {
         eckit::PathName filePath(::getenv("MULTIO_CONFIG_FILE"));
-        std::cout << "MultIO initialising with config file " << filePath << std::endl;
+        LOG_DEBUG_LIB(LibMultio) << "MultIO initialising with config file " << filePath << std::endl;
 
         auto paths2 = defaultConfigPaths(filePath);
         return ConfigAndPaths{
@@ -110,7 +111,7 @@ ConfigAndPaths configureFromEnv(config::LocalPeerTag tag) {
     }
     oss << "] }";
 
-    std::cout << "MultIO initialising with $MULTIO_SINKS " << oss.str() << std::endl;
+    LOG_DEBUG_LIB(multio::LibMultio) << "MultIO initialising with $MULTIO_SINKS " << oss.str() << std::endl;
 
     std::istringstream iss(oss.str());
     paths.configDir = "";
diff --git a/src/multio/ifsio/ifsio.cc b/src/multio/ifsio/ifsio.cc
index a58dcce0c..6e67c5cd4 100644
--- a/src/multio/ifsio/ifsio.cc
+++ b/src/multio/ifsio/ifsio.cc
@@ -22,6 +22,7 @@
 #include "eckit/config/YAMLConfiguration.h"
 #include "eckit/exception/Exceptions.h"
 #include "eckit/filesystem/PathName.h"
+#include "eckit/log/Log.h"
 #include "eckit/message/Message.h"
 #include "eckit/runtime/Main.h"
 #include "eckit/thread/AutoLock.h"
@@ -34,6 +35,7 @@
 #include "multio/multio_version.h"
 #include "multio/util/FailureHandling.h"
 // #include "multio/action/Sink.h"
+
 #include "multio/LibMultio.h"
 
 #include "metkit/codes/CodesContent.h"
@@ -146,28 +148,28 @@ class MIO : public config::MultioConfigurationHolder, public util::FailureAware<
 
         if (::getenv("MULTIO_PLANS")) {
             std::string cfg(::getenv("MULTIO_PLANS"));
-            std::cout << "MultIO initialising with plans " << cfg << std::endl;
+            LOG_DEBUG_LIB(LibMultio) << "MultIO initialising with plans " << cfg << std::endl;
             eckit::LocalConfiguration conf{eckit::YAMLConfiguration(cfg)};
             return std::make_tuple(conf, MultioConfiguration(conf, config::LocalPeerTag::Client));
         }
 
         if (::getenv("MULTIO_PLANS_FILE")) {
             PathName path(::getenv("MULTIO_PLANS_FILE"));
-            std::cout << "MultIO initialising with plans file " << path << std::endl;
+            LOG_DEBUG_LIB(LibMultio) << "MultIO initialising with plans file " << path << std::endl;
             MultioConfiguration multioConf(path, config::LocalPeerTag::Client);
             return std::make_tuple(multioConf.parsedConfig(), std::move(multioConf));
         }
 
         if (::getenv("MULTIO_CONFIG")) {
             std::string cfg(::getenv("MULTIO_CONFIG"));
-            std::cout << "MultIO initialising with config " << cfg << std::endl;
+            LOG_DEBUG_LIB(LibMultio) << "MultIO initialising with config " << cfg << std::endl;
             return configureFromSinks(MultioConfiguration(eckit::LocalConfiguration(eckit::YAMLConfiguration(cfg)),
                                                           config::LocalPeerTag::Client));
         }
 
         if (::getenv("MULTIO_CONFIG_FILE")) {
             PathName filePath(::getenv("MULTIO_CONFIG_FILE"));
-            std::cout << "MultIO initialising with config file " << filePath << std::endl;
+            LOG_DEBUG_LIB(LibMultio) << "MultIO initialising with config file " << filePath << std::endl;
             return configureFromSinks(MultioConfiguration(filePath, config::LocalPeerTag::Client));
         }