REACTORRIM method of stimulation was introduced to a settler of Jengka 22 in 1991. When it was first introduced, the system comprised a reactor botle with chemicals to generate ethylene gas, combined with puncture tapping system, 3PS d/3. This system underwent several improvements and in 1996, a canister system was introduced to replace the reactor bottle system. Similarly, the method of latex extraction was changed to 2PI d/3 and subsequently to 1/8S d/3. Results over six years indicated that the average tree productivity ranged from 76.9 to 100.7 g/t/t (g/tree/tapping). A comparison was made by the management of Jengka 22 in 1997 and 1998 between REACTORRIM system and the conventional tapping system. The results indicated that the tree productivity of the REACTORRIM system was consistently higher tahn that of the conventional tapping system. The yield of 102.9 to 110.5 g/t/t was 345 to 351;of the yield of the conventional tapping system. The average land productivity of the settlers during the period ranged from 1,015 to 2,175 kg/ha/year while income ranged from RM1,286,14 to RM1,602.86/month. The impact of REACTORRIM system on the productivity of the trees, income and land productivity on the settler was good, and this resulted in rapid expansion of the use of this system by other settlers in Jengka 22 as well as settlers from other schemes. By December 1997, a total of 98,974 trees in four schemes had been fixed with canister system combined with either 2PI d/3 or 1/8S d/3 tapping system. Although the use of REACTORRIM system has been widely accepted by settlers of Jengka 22 and neighbouring schemes, based on feedback by users during the six-year period of adoption of this system in Jengka 22, this system needs further improveemnt. The experience in the implementation of REACTORRIM by settlers of Jengka 22 shows that this system has a great potential to overcome the prevailing problems faced by the rubber industry, primarily the problem of shortage of labour, low productivity and low income of smallholders.